68908539 has 8 divisors (see below), whose sum is σ = 105003520. Its totient is φ = 39376296.

The previous prime is 68908523. The next prime is 68908547. The reversal of 68908539 is 93580986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68908539 - 2⁴ = 68908523 is a prime.

It is a super-2 number, since 2×68908539² = 9496773494229042, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68918539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1640659 + ... + 1640700.

It is an arithmetic number, because the mean of its divisors is an integer number (13125440).

Almost surely, 2^68908539 is an apocalyptic number.

68908539 is a deficient number, since it is larger than the sum of its proper divisors (36094981).

68908539 is a wasteful number, since it uses less digits than its factorization.

68908539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281369.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 68908539 is about 8301.1167321030. The cubic root of 68908539 is about 409.9752890124.

The spelling of 68908539 in words is "sixty-eight million, nine hundred eight thousand, five hundred thirty-nine".