87620884 has 24 divisors (see below), whose sum is σ = 169598408. Its totient is φ = 39346560.

The previous prime is 87620881. The next prime is 87620893. The reversal of 87620884 is 48802678.

It can be written as a sum of positive squares in 4 ways, for example, as 2464900 + 85155984 = 1570^2 + 9228^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87620884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87620881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20847 + ... + 24694.

Almost surely, 2^87620884 is an apocalyptic number.

It is an amenable number.

87620884 is a deficient number, since it is larger than the sum of its proper divisors (81977524).

87620884 is a wasteful number, since it uses less digits than its factorization.

87620884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45595 (or 45593 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 87620884 is about 9360.6027583698. The cubic root of 87620884 is about 444.1563513420.

The spelling of 87620884 in words is "eighty-seven million, six hundred twenty thousand, eight hundred eighty-four".