674864 has 10 divisors (see below), whose sum is σ = 1307580. Its totient is φ = 337424.

The previous prime is 674857. The next prime is 674867. The reversal of 674864 is 468476.

It is not an unprimeable number, because it can be changed into a prime (674867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21074 + ... + 21105.

It is an arithmetic number, because the mean of its divisors is an integer number (130758).

2⁶⁷⁴⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

674864 is a deficient number, since it is larger than the sum of its proper divisors (632716).

674864 is a wasteful number, since it uses less digits than its factorization.

674864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42187 (or 42181 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 674864 is about 821.5010651241. The cubic root of 674864 is about 87.7146403964.

The spelling of 674864 in words is "six hundred seventy-four thousand, eight hundred sixty-four".