656116045 has 16 divisors (see below), whose sum is σ = 852313392. Its totient is φ = 481996800.

The previous prime is 656116007. The next prime is 656116057. The reversal of 656116045 is 540611656.

It is a happy number.

656116045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 17189316 + 638926729 = 4146^2 + 25277^2 .

It is not a de Polignac number, because 656116045 - 2²⁵ = 622561613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 656116045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13606 + ... + 38695.

It is an arithmetic number, because the mean of its divisors is an integer number (53269587).

Almost surely, 2^656116045 is an apocalyptic number.

656116045 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

656116045 is a deficient number, since it is larger than the sum of its proper divisors (196197347).

656116045 is a wasteful number, since it uses less digits than its factorization.

656116045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52512.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 656116045 is about 25614.7622475790. The cubic root of 656116045 is about 868.9475294331.

The spelling of 656116045 in words is "six hundred fifty-six million, one hundred sixteen thousand, forty-five".