74345814685 has 12 divisors (see below), whose sum is σ = 94157637948. Its totient is φ = 56346300288.

The previous prime is 74345814677. The next prime is 74345814703. The reversal of 74345814685 is 58641854347.

It can be written as a sum of positive squares in 2 ways, for example, as 31667626116 + 42678188569 = 177954^2 + 206587^2 .

It is not a de Polignac number, because 74345814685 - 2³ = 74345814677 is a prime.

It is a super-2 number, since 2×74345814685² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20592604 + ... + 20596213.

It is an arithmetic number, because the mean of its divisors is an integer number (7846469829).

Almost surely, 2^74345814685 is an apocalyptic number.

It is an amenable number.

74345814685 is a deficient number, since it is larger than the sum of its proper divisors (19811823263).

74345814685 is a wasteful number, since it uses less digits than its factorization.

74345814685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41188860 (or 41188841 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 55.

The spelling of 74345814685 in words is "seventy-four billion, three hundred forty-five million, eight hundred fourteen thousand, six hundred eighty-five".