87872847 has 16 divisors (see below), whose sum is σ = 125556480. Its totient is φ = 54468992.

The previous prime is 87872833. The next prime is 87872867. The reversal of 87872847 is 74827878.

It is a cyclic number.

It is not a de Polignac number, because 87872847 - 2⁴ = 87872831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 87872847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87872867) 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, 6147 + ... + 14612.

It is an arithmetic number, because the mean of its divisors is an integer number (7847280).

Almost surely, 2^87872847 is an apocalyptic number.

87872847 is a deficient number, since it is larger than the sum of its proper divisors (37683633).

87872847 is a wasteful number, since it uses less digits than its factorization.

87872847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20862.

The product of its digits is 1404928, while the sum is 51.

The square root of 87872847 is about 9374.0517920481. The cubic root of 87872847 is about 444.5816832268.

The spelling of 87872847 in words is "eighty-seven million, eight hundred seventy-two thousand, eight hundred forty-seven".