Search a number
-
+
68254965 = 3251579661
BaseRepresentation
bin1000001000101…
…11110011110101
311202102201012200
410010113303311
5114433124330
610434535113
71456105032
oct404276365
9152381180
1068254965
1135589a69
121aa37499
13111aa46c
1490ca389
155ed3a60
hex4117cf5

68254965 has 24 divisors (see below), whose sum is σ = 119074488. Its totient is φ = 36167040.

The previous prime is 68254957. The next prime is 68254981. The reversal of 68254965 is 56945286.

It can be written as a sum of positive squares in 4 ways, for example, as 1962801 + 66292164 = 1401^2 + 8142^2 .

It is not a de Polignac number, because 68254965 - 23 = 68254957 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 68254965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2235 + ... + 11895.

It is an arithmetic number, because the mean of its divisors is an integer number (4961437).

Almost surely, 268254965 is an apocalyptic number.

It is an amenable number.

68254965 is a deficient number, since it is larger than the sum of its proper divisors (50819523).

68254965 is a wasteful number, since it uses less digits than its factorization.

68254965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9829 (or 9826 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 68254965 is about 8261.6563109343. The cubic root of 68254965 is about 408.6750107923.

The spelling of 68254965 in words is "sixty-eight million, two hundred fifty-four thousand, nine hundred sixty-five".

Divisors: 1 3 5 9 15 45 157 471 785 1413 2355 7065 9661 28983 48305 86949 144915 434745 1516777 4550331 7583885 13650993 22751655 68254965