74774157 has 8 divisors (see below), whose sum is σ = 99847584. Its totient is φ = 49775088.

The previous prime is 74774153. The next prime is 74774159. The reversal of 74774157 is 75147747.

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

It is not a de Polignac number, because 74774157 - 2² = 74774153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74774153) 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, 16198 + ... + 20295.

It is an arithmetic number, because the mean of its divisors is an integer number (12480948).

Almost surely, 2^74774157 is an apocalyptic number.

It is an amenable number.

74774157 is a deficient number, since it is larger than the sum of its proper divisors (25073427).

74774157 is a wasteful number, since it uses less digits than its factorization.

74774157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37179.

The product of its digits is 192080, while the sum is 42.

The square root of 74774157 is about 8647.2051554245. The cubic root of 74774157 is about 421.2926106932.

The spelling of 74774157 in words is "seventy-four million, seven hundred seventy-four thousand, one hundred fifty-seven".