656402 has 8 divisors (see below), whose sum is σ = 1005696. Its totient is φ = 321172.

The previous prime is 656389. The next prime is 656407. The reversal of 656402 is 204656.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 656402.

It is not an unprimeable number, because it can be changed into a prime (656407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3398 + ... + 3585.

It is an arithmetic number, because the mean of its divisors is an integer number (125712).

2⁶⁵⁶⁴⁰² is an apocalyptic number.

656402 is a deficient number, since it is larger than the sum of its proper divisors (349294).

656402 is a wasteful number, since it uses less digits than its factorization.

656402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7032.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 656402 is about 810.1863983060. The cubic root of 656402 is about 86.9073748874.

The spelling of 656402 in words is "six hundred fifty-six thousand, four hundred two".