656662 has 4 divisors (see below), whose sum is σ = 984996. Its totient is φ = 328330.

The previous prime is 656657. The next prime is 656671. The reversal of 656662 is 266656.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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, 164164 + ... + 164167.

It is an arithmetic number, because the mean of its divisors is an integer number (246249).

2⁶⁵⁶⁶⁶² is an apocalyptic number.

656662 is a deficient number, since it is larger than the sum of its proper divisors (328334).

656662 is a wasteful number, since it uses less digits than its factorization.

656662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328333.

The product of its digits is 12960, while the sum is 31.

The square root of 656662 is about 810.3468393225. The cubic root of 656662 is about 86.9188480064.

The spelling of 656662 in words is "six hundred fifty-six thousand, six hundred sixty-two".