74772117 has 24 divisors (see below), whose sum is σ = 123689280. Its totient is φ = 42638400.

The previous prime is 74772109. The next prime is 74772197. The reversal of 74772117 is 71127747.

It is not a de Polignac number, because 74772117 - 2³ = 74772109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74772197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40617 + ... + 42417.

It is an arithmetic number, because the mean of its divisors is an integer number (5153720).

Almost surely, 2^74772117 is an apocalyptic number.

It is an amenable number.

74772117 is a deficient number, since it is larger than the sum of its proper divisors (48917163).

74772117 is a wasteful number, since it uses less digits than its factorization.

74772117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473 (or 2470 counting only the distinct ones).

The product of its digits is 19208, while the sum is 36.

The square root of 74772117 is about 8647.0871974324. The cubic root of 74772117 is about 421.2887794018.

The spelling of 74772117 in words is "seventy-four million, seven hundred seventy-two thousand, one hundred seventeen".