87865972 has 12 divisors (see below), whose sum is σ = 157921540. Its totient is φ = 42745536.

The previous prime is 87865963. The next prime is 87865991. The reversal of 87865972 is 27956878.

It can be written as a sum of positive squares in 2 ways, for example, as 80928016 + 6937956 = 8996^2 + 2634^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296697 + ... + 296992.

Almost surely, 2^87865972 is an apocalyptic number.

It is an amenable number.

87865972 is a deficient number, since it is larger than the sum of its proper divisors (70055568).

87865972 is a wasteful number, since it uses less digits than its factorization.

87865972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593730 (or 593728 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 52.

The square root of 87865972 is about 9373.6850811194. The cubic root of 87865972 is about 444.5700885235.

The spelling of 87865972 in words is "eighty-seven million, eight hundred sixty-five thousand, nine hundred seventy-two".