87645960 has 48 divisors (see below), whose sum is σ = 284850540. Its totient is φ = 23372160.

The previous prime is 87645953. The next prime is 87645977. The reversal of 87645960 is 6954678.

It can be written as a sum of positive squares in 2 ways, for example, as 86825124 + 820836 = 9318^2 + 906^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 121371 + ... + 122090.

Almost surely, 2^87645960 is an apocalyptic number.

It is an amenable number.

87645960 is an abundant number, since it is smaller than the sum of its proper divisors (197204580).

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

87645960 is a wasteful number, since it uses less digits than its factorization.

87645960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243478 (or 243471 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 87645960 is about 9361.9421062085. The cubic root of 87645960 is about 444.1987179630.

The spelling of 87645960 in words is "eighty-seven million, six hundred forty-five thousand, nine hundred sixty".