656674 has 8 divisors (see below), whose sum is σ = 989100. Its totient is φ = 326976.

The previous prime is 656671. The next prime is 656681. The reversal of 656674 is 476656.

It can be written as a sum of positive squares in 2 ways, for example, as 648025 + 8649 = 805^2 + 93^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656671) 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, 102 + ... + 1150.

2⁶⁵⁶⁶⁷⁴ is an apocalyptic number.

656674 is a deficient number, since it is larger than the sum of its proper divisors (332426).

656674 is a wasteful number, since it uses less digits than its factorization.

656674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364.

The product of its digits is 30240, while the sum is 34.

The square root of 656674 is about 810.3542435256. The cubic root of 656674 is about 86.9193774618.

The spelling of 656674 in words is "six hundred fifty-six thousand, six hundred seventy-four".