427307664 has 40 divisors (see below), whose sum is σ = 1261576000. Its totient is φ = 122087808.

The previous prime is 427307653. The next prime is 427307687. The reversal of 427307664 is 466703724.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635539 + ... + 636210.

It is an arithmetic number, because the mean of its divisors is an integer number (31539400).

Almost surely, 2^427307664 is an apocalyptic number.

It is an amenable number.

427307664 is an abundant number, since it is smaller than the sum of its proper divisors (834268336).

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

427307664 is a wasteful number, since it uses less digits than its factorization.

427307664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271767 (or 1271761 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 39.

The square root of 427307664 is about 20671.4214315320. The cubic root of 427307664 is about 753.2056354587.

The spelling of 427307664 in words is "four hundred twenty-seven million, three hundred seven thousand, six hundred sixty-four".