74658681 has 12 divisors (see below), whose sum is σ = 108529252. Its totient is φ = 49454496.

The previous prime is 74658671. The next prime is 74658697. The reversal of 74658681 is 18685647.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6843456 + 67815225 = 2616^2 + 8235^2 .

It is not a de Polignac number, because 74658681 - 2⁷ = 74658553 is a prime.

It is a super-2 number, since 2×74658681² = 11147837297319522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74658671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25006 + ... + 27831.

Almost surely, 2^74658681 is an apocalyptic number.

It is an amenable number.

74658681 is a deficient number, since it is larger than the sum of its proper divisors (33870571).

74658681 is a wasteful number, since it uses less digits than its factorization.

74658681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53000 (or 52997 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 74658681 is about 8640.5255048521. The cubic root of 74658681 is about 421.0756273019.

The spelling of 74658681 in words is "seventy-four million, six hundred fifty-eight thousand, six hundred eighty-one".