47665812 has 12 divisors (see below), whose sum is σ = 111220256. Its totient is φ = 15888600.

The previous prime is 47665811. The next prime is 47665829. The reversal of 47665812 is 21856674.

47665812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47665811) by changing a digit.

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, 1986064 + ... + 1986087.

Almost surely, 2^47665812 is an apocalyptic number.

It is an amenable number.

47665812 is an abundant number, since it is smaller than the sum of its proper divisors (63554444).

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

47665812 is a wasteful number, since it uses less digits than its factorization.

47665812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972158 (or 3972156 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 47665812 is about 6904.0431632486. The cubic root of 47665812 is about 362.5787370781.

The spelling of 47665812 in words is "forty-seven million, six hundred sixty-five thousand, eight hundred twelve".