74657157 has 8 divisors (see below), whose sum is σ = 102233376. Its totient is φ = 48426192.

The previous prime is 74657129. The next prime is 74657171. The reversal of 74657157 is 75175647.

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

It is not a de Polignac number, because 74657157 - 2²⁰ = 73608581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74657257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336183 + ... + 336404.

It is an arithmetic number, because the mean of its divisors is an integer number (12779172).

Almost surely, 2^74657157 is an apocalyptic number.

It is an amenable number.

74657157 is a deficient number, since it is larger than the sum of its proper divisors (27576219).

74657157 is a wasteful number, since it uses less digits than its factorization.

74657157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672627.

The product of its digits is 205800, while the sum is 42.

The square root of 74657157 is about 8640.4373153215. The cubic root of 74657157 is about 421.0727621579.

It can be divided in two parts, 74 and 657157, that added together give a triangular number (657231 = T₁₁₄₆).

The spelling of 74657157 in words is "seventy-four million, six hundred fifty-seven thousand, one hundred fifty-seven".