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68539395 = 3547191509
BaseRepresentation
bin1000001010111…
…01010000000011
311202222011101010
410011131100003
5120021230040
610445012003
71461401211
oct405352003
9152864333
1068539395
1135763731
121ab54003
1311279a72
149161cb1
15603ce80
hex415d403

68539395 has 32 divisors (see below), whose sum is σ = 112803840. Its totient is φ = 35519360.

The previous prime is 68539369. The next prime is 68539399. The reversal of 68539395 is 59393586.

It is not a de Polignac number, because 68539395 - 25 = 68539363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68539399) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134401 + ... + 134909.

It is an arithmetic number, because the mean of its divisors is an integer number (3525120).

Almost surely, 268539395 is an apocalyptic number.

68539395 is a deficient number, since it is larger than the sum of its proper divisors (44264445).

68539395 is a wasteful number, since it uses less digits than its factorization.

68539395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755.

The product of its digits is 874800, while the sum is 48.

The square root of 68539395 is about 8278.8522755271. The cubic root of 68539395 is about 409.2418967468.

The spelling of 68539395 in words is "sixty-eight million, five hundred thirty-nine thousand, three hundred ninety-five".

Divisors: 1 3 5 15 47 141 191 235 509 573 705 955 1527 2545 2865 7635 8977 23923 26931 44885 71769 97219 119615 134655 291657 358845 486095 1458285 4569293 13707879 22846465 68539395