656445063 has 4 divisors (see below), whose sum is σ = 875260088. Its totient is φ = 437630040.

The previous prime is 656445017. The next prime is 656445067. The reversal of 656445063 is 360544656.

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

It is not a de Polignac number, because 656445063 - 2⁸ = 656444807 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 (656445067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109407508 + ... + 109407513.

It is an arithmetic number, because the mean of its divisors is an integer number (218815022).

Almost surely, 2^656445063 is an apocalyptic number.

656445063 is a deficient number, since it is larger than the sum of its proper divisors (218815025).

656445063 is a wasteful number, since it uses less digits than its factorization.

656445063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218815024.

The product of its (nonzero) digits is 259200, while the sum is 39.

The square root of 656445063 is about 25621.1838719447. The cubic root of 656445063 is about 869.0927535411.

It can be divided in two parts, 65644 and 5063, that added together give a palindrome (70707).

The spelling of 656445063 in words is "six hundred fifty-six million, four hundred forty-five thousand, sixty-three".