87935640 has 64 divisors (see below), whose sum is σ = 284104800. Its totient is φ = 21645312.

The previous prime is 87935621. The next prime is 87935657. The reversal of 87935640 is 4653978.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 87935592 and 87935601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26625 + ... + 29744.

Almost surely, 2^87935640 is an apocalyptic number.

It is an amenable number.

87935640 is an abundant number, since it is smaller than the sum of its proper divisors (196169160).

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

87935640 is a wasteful number, since it uses less digits than its factorization.

87935640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56396 (or 56392 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 87935640 is about 9377.4004926739. The cubic root of 87935640 is about 444.6875557900.

The spelling of 87935640 in words is "eighty-seven million, nine hundred thirty-five thousand, six hundred forty".