647540016 has 20 divisors (see below), whose sum is σ = 1672811832. Its totient is φ = 215846656.

The previous prime is 647539993. The next prime is 647540039. The reversal of 647540016 is 610045746.

It is an interprime number because it is at equal distance from previous prime (647539993) and next prime (647540039).

It is an unprimeable number.

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, 6745161 + ... + 6745256.

Almost surely, 2^647540016 is an apocalyptic number.

It is an amenable number.

647540016 is an abundant number, since it is smaller than the sum of its proper divisors (1025271816).

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

647540016 is a wasteful number, since it uses less digits than its factorization.

647540016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13490428 (or 13490422 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 647540016 is about 25446.8075797338. The cubic root of 647540016 is about 865.1449370107.

The spelling of 647540016 in words is "six hundred forty-seven million, five hundred forty thousand, sixteen".