656428466 has 8 divisors (see below), whose sum is σ = 986304924. Its totient is φ = 327660160.

The previous prime is 656428453. The next prime is 656428469. The reversal of 656428466 is 664824656.

It can be written as a sum of positive squares in 2 ways, for example, as 613800625 + 42627841 = 24775^2 + 6529^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×656428466² = 861796661950226312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 656428466.

It is not an unprimeable number, because it can be changed into a prime (656428469) 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, 275555 + ... + 277926.

Almost surely, 2^656428466 is an apocalyptic number.

656428466 is a deficient number, since it is larger than the sum of its proper divisors (329876458).

656428466 is a wasteful number, since it uses less digits than its factorization.

656428466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554076.

The product of its digits is 1658880, while the sum is 47.

The square root of 656428466 is about 25620.8599777603. The cubic root of 656428466 is about 869.0854290115.

The spelling of 656428466 in words is "six hundred fifty-six million, four hundred twenty-eight thousand, four hundred sixty-six".