47297664 has 48 divisors (see below), whose sum is σ = 136107270. Its totient is φ = 15765504.

The previous prime is 47297659. The next prime is 47297671. The reversal of 47297664 is 46679274.

It can be written as a sum of positive squares in only one way, i.e., 46131264 + 1166400 = 6792^2 + 1080^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19377 + ... + 21680.

Almost surely, 2^47297664 is an apocalyptic number.

It is an amenable number.

47297664 is an abundant number, since it is smaller than the sum of its proper divisors (88809606).

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

47297664 is a wasteful number, since it uses less digits than its factorization.

47297664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41077 (or 41062 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 47297664 is about 6877.3297143586. The cubic root of 47297664 is about 361.6428617582.

It can be divided in two parts, 47297 and 664, that added together give a square (47961 = 219²).

The spelling of 47297664 in words is "forty-seven million, two hundred ninety-seven thousand, six hundred sixty-four".