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68705595 = 3257231159
BaseRepresentation
bin1000001100001…
…01110100111011
311210021121100200
410012011310323
5120042034340
610452333243
71462662600
oct406056473
9153247320
1068705595
1135867592
121b014223
13113075ca
1491a66a7
156072330
hex4185d3b

68705595 has 36 divisors (see below), whose sum is σ = 138537360. Its totient is φ = 31407264.

The previous prime is 68705591. The next prime is 68705617. The reversal of 68705595 is 59550786.

It is not a de Polignac number, because 68705595 - 22 = 68705591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68705595.

It is not an unprimeable number, because it can be changed into a prime (68705591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13375 + ... + 17784.

It is an arithmetic number, because the mean of its divisors is an integer number (3848260).

Almost surely, 268705595 is an apocalyptic number.

68705595 is an abundant number, since it is smaller than the sum of its proper divisors (69831765).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68705595 is a wasteful number, since it uses less digits than its factorization.

68705595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31184 (or 31174 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 68705595 is about 8288.8838211185. The cubic root of 68705595 is about 409.5724176112.

The spelling of 68705595 in words is "sixty-eight million, seven hundred five thousand, five hundred ninety-five".

Divisors: 1 3 5 7 9 15 21 35 45 49 63 105 147 245 315 441 735 2205 31159 93477 155795 218113 280431 467385 654339 1090565 1402155 1526791 1963017 3271695 4580373 7633955 9815085 13741119 22901865 68705595