87212604 has 12 divisors (see below), whose sum is σ = 203496104. Its totient is φ = 29070864.

The previous prime is 87212581. The next prime is 87212639. The reversal of 87212604 is 40621278.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3633847 + ... + 3633870.

Almost surely, 2^87212604 is an apocalyptic number.

It is an amenable number.

87212604 is an abundant number, since it is smaller than the sum of its proper divisors (116283500).

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

87212604 is a wasteful number, since it uses less digits than its factorization.

87212604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7267724 (or 7267722 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 87212604 is about 9338.7688696102. The cubic root of 87212604 is about 443.4654104880.

It can be divided in two parts, 8721 and 2604, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 87212604 in words is "eighty-seven million, two hundred twelve thousand, six hundred four".