427716656 has 20 divisors (see below), whose sum is σ = 829074912. Its totient is φ = 213761856.

The previous prime is 427716649. The next prime is 427716659. The reversal of 427716656 is 656617724.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (427716659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42266 + ... + 51398.

Almost surely, 2^427716656 is an apocalyptic number.

It is an amenable number.

427716656 is a deficient number, since it is larger than the sum of its proper divisors (401358256).

427716656 is a wasteful number, since it uses less digits than its factorization.

427716656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12068 (or 12062 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The square root of 427716656 is about 20681.3117572363. The cubic root of 427716656 is about 753.4458658389.

The spelling of 427716656 in words is "four hundred twenty-seven million, seven hundred sixteen thousand, six hundred fifty-six".