87998170 has 16 divisors (see below), whose sum is σ = 170581320. Its totient is φ = 32491584.

The previous prime is 87998149. The next prime is 87998189. The reversal of 87998170 is 7189978.

It can be written as a sum of positive squares in 4 ways, for example, as 79869969 + 8128201 = 8937^2 + 2851^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338325 + ... + 338584.

Almost surely, 2^87998170 is an apocalyptic number.

87998170 is a deficient number, since it is larger than the sum of its proper divisors (82583150).

87998170 is a wasteful number, since it uses less digits than its factorization.

87998170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676929.

The product of its (nonzero) digits is 254016, while the sum is 49.

The square root of 87998170 is about 9380.7339798120. The cubic root of 87998170 is about 444.7929348474.

The spelling of 87998170 in words is "eighty-seven million, nine hundred ninety-eight thousand, one hundred seventy".