68685596874 has 24 divisors (see below), whose sum is σ = 151626697092. Its totient is φ = 22463213760.

The previous prime is 68685596873. The next prime is 68685596891. The reversal of 68685596874 is 47869558686.

It is a happy number.

68685596874 is a `hidden beast` number, since 6 + 8 + 6 + 8 + 559 + 68 + 7 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 66284106849 + 2401490025 = 257457^2 + 49005^2 .

It is a super-2 number, since 2×68685596874² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68685596873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35997787 + ... + 35999694.

Almost surely, 2^68685596874 is an apocalyptic number.

68685596874 is an abundant number, since it is smaller than the sum of its proper divisors (82941100218).

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

68685596874 is a wasteful number, since it uses less digits than its factorization.

68685596874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71997542 (or 71997539 counting only the distinct ones).

The product of its digits is 696729600, while the sum is 72.

The spelling of 68685596874 in words is "sixty-eight billion, six hundred eighty-five million, five hundred ninety-six thousand, eight hundred seventy-four".