656607 has 8 divisors (see below), whose sum is σ = 1000576. Its totient is φ = 375192.

The previous prime is 656603. The next prime is 656609. The reversal of 656607 is 706656.

656607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 656607 - 2² = 656603 is a prime.

It is a super-2 number, since 2×656607² = 862265504898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15613 + ... + 15654.

It is an arithmetic number, because the mean of its divisors is an integer number (125072).

2⁶⁵⁶⁶⁰⁷ is an apocalyptic number.

656607 is a deficient number, since it is larger than the sum of its proper divisors (343969).

656607 is a wasteful number, since it uses less digits than its factorization.

656607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31277.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 656607 is about 810.3129025259. The cubic root of 656607 is about 86.9164212530.

The spelling of 656607 in words is "six hundred fifty-six thousand, six hundred seven".