656625063 has 4 divisors (see below), whose sum is σ = 875500088. Its totient is φ = 437750040.

The previous prime is 656625059. The next prime is 656625071. The reversal of 656625063 is 360526656.

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

It is not a de Polignac number, because 656625063 - 2² = 656625059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656625083) 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, 109437508 + ... + 109437513.

It is an arithmetic number, because the mean of its divisors is an integer number (218875022).

Almost surely, 2^656625063 is an apocalyptic number.

656625063 is a deficient number, since it is larger than the sum of its proper divisors (218875025).

656625063 is a wasteful number, since it uses less digits than its factorization.

656625063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218875024.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 656625063 is about 25624.6963494204. The cubic root of 656625063 is about 869.1721825790.

The spelling of 656625063 in words is "six hundred fifty-six million, six hundred twenty-five thousand, sixty-three".