478648737 has 32 divisors (see below), whose sum is σ = 822528000. Its totient is φ = 269424144.

The previous prime is 478648727. The next prime is 478648759. The reversal of 478648737 is 737846874.

478648737 is a `hidden beast` number, since 478 + 64 + 87 + 37 = 666.

It is not a de Polignac number, because 478648737 - 2⁴ = 478648721 is a prime.

It is a super-2 number, since 2×478648737² = 458209226863390338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478648727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6237 + ... + 31562.

It is an arithmetic number, because the mean of its divisors is an integer number (25704000).

Almost surely, 2^478648737 is an apocalyptic number.

It is an amenable number.

478648737 is a deficient number, since it is larger than the sum of its proper divisors (343879263).

478648737 is a wasteful number, since it uses less digits than its factorization.

478648737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37882 (or 37876 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 54.

The square root of 478648737 is about 21878.0423484369. The cubic root of 478648737 is about 782.2381132892.

The spelling of 478648737 in words is "four hundred seventy-eight million, six hundred forty-eight thousand, seven hundred thirty-seven".