87712620 has 24 divisors (see below), whose sum is σ = 245595504. Its totient is φ = 23390016.

The previous prime is 87712613. The next prime is 87712621. The reversal of 87712620 is 2621778.

It is not an unprimeable number, because it can be changed into a prime (87712621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730879 + ... + 730998.

It is an arithmetic number, because the mean of its divisors is an integer number (10233146).

Almost surely, 2^87712620 is an apocalyptic number.

It is an amenable number.

87712620 is an abundant number, since it is smaller than the sum of its proper divisors (157882884).

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

87712620 is a wasteful number, since it uses less digits than its factorization.

87712620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461889 (or 1461887 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 87712620 is about 9365.5015882760. The cubic root of 87712620 is about 444.3113026651.

It can be divided in two parts, 8 and 7712620, that added together give a triangular number (7712628 = T₃₉₂₇).

The spelling of 87712620 in words is "eighty-seven million, seven hundred twelve thousand, six hundred twenty".