87512636 has 12 divisors (see below), whose sum is σ = 153531840. Its totient is φ = 43646400.

The previous prime is 87512629. The next prime is 87512641. The reversal of 87512636 is 63621578.

It is a super-2 number, since 2×87512636² = 15316922919336992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87512636.

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, 25676 + ... + 28883.

It is an arithmetic number, because the mean of its divisors is an integer number (12794320).

Almost surely, 2^87512636 is an apocalyptic number.

It is an amenable number.

87512636 is a deficient number, since it is larger than the sum of its proper divisors (66019204).

87512636 is a wasteful number, since it uses less digits than its factorization.

87512636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54964 (or 54962 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 87512636 is about 9354.8188651625. The cubic root of 87512636 is about 443.9733704236.

The spelling of 87512636 in words is "eighty-seven million, five hundred twelve thousand, six hundred thirty-six".