426620664 has 48 divisors (see below), whose sum is σ = 1169368200. Its totient is φ = 140491584.

The previous prime is 426620657. The next prime is 426620669. The reversal of 426620664 is 466026624.

426620664 is a `hidden beast` number, since 4 + 26 + 620 + 6 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426620669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29719 + ... + 41670.

Almost surely, 2^426620664 is an apocalyptic number.

It is an amenable number.

426620664 is an abundant number, since it is smaller than the sum of its proper divisors (742747536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

426620664 is a wasteful number, since it uses less digits than its factorization.

426620664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71484 (or 71477 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 426620664 is about 20654.7976024942. The cubic root of 426620664 is about 752.8017657781.

The spelling of 426620664 in words is "four hundred twenty-six million, six hundred twenty thousand, six hundred sixty-four".