74992117 has 8 divisors (see below), whose sum is σ = 80523072. Its totient is φ = 69585600.

The previous prime is 74992091. The next prime is 74992133. The reversal of 74992117 is 71129947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74992117 - 2¹⁹ = 74467829 is a prime.

It is a super-2 number, since 2×74992117² = 11247635224283378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74992117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74992217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29859 + ... + 32272.

It is an arithmetic number, because the mean of its divisors is an integer number (10065384).

Almost surely, 2^74992117 is an apocalyptic number.

It is an amenable number.

74992117 is a deficient number, since it is larger than the sum of its proper divisors (5530955).

74992117 is a wasteful number, since it uses less digits than its factorization.

74992117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62219.

The product of its digits is 31752, while the sum is 40.

The square root of 74992117 is about 8659.7989006674. The cubic root of 74992117 is about 421.7015570672.

The spelling of 74992117 in words is "seventy-four million, nine hundred ninety-two thousand, one hundred seventeen".