47664813 has 16 divisors (see below), whose sum is σ = 72728576. Its totient is φ = 27200880.

The previous prime is 47664803. The next prime is 47664817. The reversal of 47664813 is 31846674.

It is not a de Polignac number, because 47664813 - 2⁵ = 47664781 is a prime.

It is a Duffinian number.

Its product of digits (96768) is a multiple of the sum of its prime divisors (3024).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47664817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30120 + ... + 31662.

It is an arithmetic number, because the mean of its divisors is an integer number (4545536).

Almost surely, 2^47664813 is an apocalyptic number.

It is an amenable number.

47664813 is a deficient number, since it is larger than the sum of its proper divisors (25063763).

47664813 is a wasteful number, since it uses less digits than its factorization.

47664813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024.

The product of its digits is 96768, while the sum is 39.

The square root of 47664813 is about 6903.9708139592. The cubic root of 47664813 is about 362.5762040349.

The spelling of 47664813 in words is "forty-seven million, six hundred sixty-four thousand, eight hundred thirteen".