647412320 has 24 divisors (see below), whose sum is σ = 1529511984. Its totient is φ = 258964864.

The previous prime is 647412319. The next prime is 647412341. The reversal of 647412320 is 23214746.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2023004 + ... + 2023323.

It is an arithmetic number, because the mean of its divisors is an integer number (63729666).

Almost surely, 2^647412320 is an apocalyptic number.

It is an amenable number.

647412320 is an abundant number, since it is smaller than the sum of its proper divisors (882099664).

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

647412320 is a wasteful number, since it uses less digits than its factorization.

647412320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046342 (or 4046334 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 647412320 is about 25444.2983790082. The cubic root of 647412320 is about 865.0880639177.

The spelling of 647412320 in words is "six hundred forty-seven million, four hundred twelve thousand, three hundred twenty".