87017072 has 20 divisors (see below), whose sum is σ = 169716816. Its totient is φ = 43219200.

The previous prime is 87017071. The next prime is 87017137. The reversal of 87017072 is 27071078.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87017071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15593 + ... + 20424.

Almost surely, 2^87017072 is an apocalyptic number.

It is an amenable number.

87017072 is a deficient number, since it is larger than the sum of its proper divisors (82699744).

87017072 is a wasteful number, since it uses less digits than its factorization.

87017072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36176 (or 36170 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 32.

The square root of 87017072 is about 9328.2941634578. The cubic root of 87017072 is about 443.1337437393.

Subtracting from 87017072 its product of nonzero digits (5488), we obtain a square (87011584 = 9328²).

The spelling of 87017072 in words is "eighty-seven million, seventeen thousand, seventy-two".