674323157 has 4 divisors (see below), whose sum is σ = 674407296. Its totient is φ = 674239020.

The previous prime is 674323099. The next prime is 674323163. The reversal of 674323157 is 751323476.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 674323157 - 2¹⁸ = 674061013 is a prime.

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 674323157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674323057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28613 + ... + 46554.

It is an arithmetic number, because the mean of its divisors is an integer number (168601824).

Almost surely, 2^674323157 is an apocalyptic number.

It is an amenable number.

674323157 is a deficient number, since it is larger than the sum of its proper divisors (84139).

674323157 is an equidigital number, since it uses as much as digits as its factorization.

674323157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84138.

The product of its digits is 105840, while the sum is 38.

The square root of 674323157 is about 25967.7329969329. The cubic root of 674323157 is about 876.9120232700.

The spelling of 674323157 in words is "six hundred seventy-four million, three hundred twenty-three thousand, one hundred fifty-seven".