87633572 has 24 divisors (see below), whose sum is σ = 174872376. Its totient is φ = 38066688.

The previous prime is 87633569. The next prime is 87633593. The reversal of 87633572 is 27533678.

It can be written as a sum of positive squares in 4 ways, for example, as 6885376 + 80748196 = 2624^2 + 8986^2 .

It is a super-4 number, since 4×87633572⁴ (a number of 33 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 48683 + ... + 50450.

It is an arithmetic number, because the mean of its divisors is an integer number (7286349).

Almost surely, 2^87633572 is an apocalyptic number.

It is an amenable number.

87633572 is a deficient number, since it is larger than the sum of its proper divisors (87238804).

87633572 is a wasteful number, since it uses less digits than its factorization.

87633572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99167 (or 99165 counting only the distinct ones).

The product of its digits is 211680, while the sum is 41.

The square root of 87633572 is about 9361.2804679702. The cubic root of 87633572 is about 444.1777890919.

The spelling of 87633572 in words is "eighty-seven million, six hundred thirty-three thousand, five hundred seventy-two".