674564 has 12 divisors (see below), whose sum is σ = 1287888. Its totient is φ = 306600.

The previous prime is 674563. The next prime is 674603. The reversal of 674564 is 465476.

It is a self number, because there is not a number n which added to its sum of digits gives 674564.

It is not an unprimeable number, because it can be changed into a prime (674563) 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 in 3 ways as a sum of consecutive naturals, for example, 7622 + ... + 7709.

It is an arithmetic number, because the mean of its divisors is an integer number (107324).

2⁶⁷⁴⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

674564 is a deficient number, since it is larger than the sum of its proper divisors (613324).

674564 is a wasteful number, since it uses less digits than its factorization.

674564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15346 (or 15344 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 674564 is about 821.3184522461. The cubic root of 674564 is about 87.7016410897.

The spelling of 674564 in words is "six hundred seventy-four thousand, five hundred sixty-four".