647400652 has 12 divisors (see below), whose sum is σ = 1169498176. Its totient is φ = 313258320.

The previous prime is 647400631. The next prime is 647400653. The reversal of 647400652 is 256004746.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (647400653) 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, 2610363 + ... + 2610610.

Almost surely, 2^647400652 is an apocalyptic number.

647400652 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

647400652 is a deficient number, since it is larger than the sum of its proper divisors (522097524).

647400652 is a wasteful number, since it uses less digits than its factorization.

647400652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221008 (or 5221006 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 647400652 is about 25444.0690928161. The cubic root of 647400652 is about 865.0828668648.

The spelling of 647400652 in words is "six hundred forty-seven million, four hundred thousand, six hundred fifty-two".