74056369689 has 21 divisors (see below), whose sum is σ = 111044778853. Its totient is φ = 49366014732.

The previous prime is 74056369631. The next prime is 74056369721. The reversal of 74056369689 is 98696365047.

The square root of 74056369689 is 272133.

It is a perfect power (a square), and thus also a powerful number.

74056369689 is a `hidden beast` number, since 7 + 4 + 0 + 563 + 6 + 9 + 68 + 9 = 666.

It is not a de Polignac number, because 74056369689 - 2¹¹ = 74056367641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74056369609) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 7342552 + ... + 7352630.

Almost surely, 2^74056369689 is an apocalyptic number.

74056369689 is the 272133-rd square number.

74056369689 is the 136067-th centered octagonal number.

It is an amenable number.

74056369689 is a deficient number, since it is larger than the sum of its proper divisors (36988409164).

74056369689 is an frugal number, since it uses more digits than its factorization.

74056369689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20176 (or 10082 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 74056369689 in words is "seventy-four billion, fifty-six million, three hundred sixty-nine thousand, six hundred eighty-nine".