74668066868 has 12 divisors (see below), whose sum is σ = 131056861572. Its totient is φ = 37223249280.

The previous prime is 74668066861. The next prime is 74668066871. The reversal of 74668066868 is 86866086647.

It can be written as a sum of positive squares in 2 ways, for example, as 45608727844 + 29059339024 = 213562^2 + 170468^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74668066861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27694523 + ... + 27697218.

It is an arithmetic number, because the mean of its divisors is an integer number (10921405131).

Almost surely, 2^74668066868 is an apocalyptic number.

It is an amenable number.

74668066868 is a deficient number, since it is larger than the sum of its proper divisors (56388794704).

74668066868 is a wasteful number, since it uses less digits than its factorization.

74668066868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55392082 (or 55392080 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 65.

The spelling of 74668066868 in words is "seventy-four billion, six hundred sixty-eight million, sixty-six thousand, eight hundred sixty-eight".