74772971 has 32 divisors (see below), whose sum is σ = 96432000. Its totient is φ = 57576960.

The previous prime is 74772937. The next prime is 74772989. The reversal of 74772971 is 17927747.

It is not a de Polignac number, because 74772971 - 2¹⁸ = 74510827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74777971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182615 + ... + 183023.

It is an arithmetic number, because the mean of its divisors is an integer number (3013500).

Almost surely, 2^74772971 is an apocalyptic number.

74772971 is a deficient number, since it is larger than the sum of its proper divisors (21659029).

74772971 is a wasteful number, since it uses less digits than its factorization.

74772971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 470 counting only the distinct ones).

The product of its digits is 172872, while the sum is 44.

The square root of 74772971 is about 8647.1365780818. The cubic root of 74772971 is about 421.2903832940.

The spelling of 74772971 in words is "seventy-four million, seven hundred seventy-two thousand, nine hundred seventy-one".