87673656 has 64 divisors (see below), whose sum is σ = 253025280. Its totient is φ = 24796800.

The previous prime is 87673639. The next prime is 87673661. The reversal of 87673656 is 65637678.

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, 14385 + ... + 19551.

It is an arithmetic number, because the mean of its divisors is an integer number (3953520).

Almost surely, 2^87673656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87673656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126512640).

87673656 is an abundant number, since it is smaller than the sum of its proper divisors (165351624).

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

87673656 is a wasteful number, since it uses less digits than its factorization.

87673656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284 (or 5280 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The square root of 87673656 is about 9363.4211696367. The cubic root of 87673656 is about 444.2455017587.

The spelling of 87673656 in words is "eighty-seven million, six hundred seventy-three thousand, six hundred fifty-six".