68539707 has 24 divisors (see below), whose sum is σ = 104894400. Its totient is φ = 43005168.

The previous prime is 68539697. The next prime is 68539781. The reversal of 68539707 is 70793586.

It is a happy number.

It is not a de Polignac number, because 68539707 - 2⁶ = 68539643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68539007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26644 + ... + 29102.

It is an arithmetic number, because the mean of its divisors is an integer number (4370600).

Almost surely, 2^68539707 is an apocalyptic number.

68539707 is a deficient number, since it is larger than the sum of its proper divisors (36354693).

68539707 is a wasteful number, since it uses less digits than its factorization.

68539707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647 (or 2644 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 68539707 is about 8278.8711186973. The cubic root of 68539707 is about 409.2425177195.

The spelling of 68539707 in words is "sixty-eight million, five hundred thirty-nine thousand, seven hundred seven".