656634345 has 16 divisors (see below), whose sum is σ = 1052636352. Its totient is φ = 349531200.

The previous prime is 656634313. The next prime is 656634347. The reversal of 656634345 is 543436656.

It is a happy number.

It is not a de Polignac number, because 656634345 - 2⁵ = 656634313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 656634297 and 656634306.

It is not an unprimeable number, because it can be changed into a prime (656634347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34006 + ... + 49695.

It is an arithmetic number, because the mean of its divisors is an integer number (65789772).

Almost surely, 2^656634345 is an apocalyptic number.

It is an amenable number.

656634345 is a deficient number, since it is larger than the sum of its proper divisors (396002007).

656634345 is a wasteful number, since it uses less digits than its factorization.

656634345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84232.

The product of its digits is 777600, while the sum is 42.

The square root of 656634345 is about 25624.8774631217. The cubic root of 656634345 is about 869.1762780761.

The spelling of 656634345 in words is "six hundred fifty-six million, six hundred thirty-four thousand, three hundred forty-five".