74736669 has 16 divisors (see below), whose sum is σ = 114389120. Its totient is φ = 42517440.

The previous prime is 74736661. The next prime is 74736703. The reversal of 74736669 is 96663747.

It is not a de Polignac number, because 74736669 - 2³ = 74736661 is a prime.

It is a super-2 number, since 2×74736669² = 11171139386431122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74736661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2962 + ... + 12579.

It is an arithmetic number, because the mean of its divisors is an integer number (7149320).

Almost surely, 2^74736669 is an apocalyptic number.

It is an amenable number.

74736669 is a deficient number, since it is larger than the sum of its proper divisors (39652451).

74736669 is a wasteful number, since it uses less digits than its factorization.

74736669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15780.

The product of its digits is 1143072, while the sum is 48.

The square root of 74736669 is about 8645.0372468833. The cubic root of 74736669 is about 421.2221939516. Note that the first 3 decimals are identical.

The spelling of 74736669 in words is "seventy-four million, seven hundred thirty-six thousand, six hundred sixty-nine".