656450969 has 4 divisors (see below), whose sum is σ = 691001040. Its totient is φ = 621900900.

The previous prime is 656450953. The next prime is 656451011. The reversal of 656450969 is 969054656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 656450969 - 2⁴ = 656450953 is a prime.

It is a super-2 number, since 2×656450969² = 861855749402077922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656450369) 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, 17275007 + ... + 17275044.

It is an arithmetic number, because the mean of its divisors is an integer number (172750260).

Almost surely, 2^656450969 is an apocalyptic number.

It is an amenable number.

656450969 is a deficient number, since it is larger than the sum of its proper divisors (34550071).

656450969 is a wasteful number, since it uses less digits than its factorization.

656450969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34550070.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The square root of 656450969 is about 25621.2991278741. The cubic root of 656450969 is about 869.0953599265.

The spelling of 656450969 in words is "six hundred fifty-six million, four hundred fifty thousand, nine hundred sixty-nine".