87708090 has 32 divisors (see below), whose sum is σ = 210865536. Its totient is φ = 23348160.

The previous prime is 87708077. The next prime is 87708107. The reversal of 87708090 is 9080778.

It is a Curzon 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, 17619 + ... + 22041.

It is an arithmetic number, because the mean of its divisors is an integer number (6589548).

Almost surely, 2^87708090 is an apocalyptic number.

87708090 is an abundant number, since it is smaller than the sum of its proper divisors (123157446).

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

87708090 is a wasteful number, since it uses less digits than its factorization.

87708090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5094.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 87708090 is about 9365.2597401247. The cubic root of 87708090 is about 444.3036535764.

The spelling of 87708090 in words is "eighty-seven million, seven hundred eight thousand, ninety".