674257 has 4 divisors (see below), whose sum is σ = 679536. Its totient is φ = 668980.

The previous prime is 674249. The next prime is 674263. The reversal of 674257 is 752476.

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 674257 - 2³ = 674249 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (674227) 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, 2443 + ... + 2704.

It is an arithmetic number, because the mean of its divisors is an integer number (169884).

2⁶⁷⁴²⁵⁷ is an apocalyptic number.

It is an amenable number.

674257 is a deficient number, since it is larger than the sum of its proper divisors (5279).

674257 is a wasteful number, since it uses less digits than its factorization.

674257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278.

The product of its digits is 11760, while the sum is 31.

The square root of 674257 is about 821.1315363570. The cubic root of 674257 is about 87.6883344752.

The spelling of 674257 in words is "six hundred seventy-four thousand, two hundred fifty-seven".