87111995 has 32 divisors (see below), whose sum is σ = 114125760. Its totient is φ = 63590400.

The previous prime is 87111989. The next prime is 87112007. The reversal of 87111995 is 59911178.

It is not a de Polignac number, because 87111995 - 2¹⁰ = 87110971 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 626636 + ... + 626774.

It is an arithmetic number, because the mean of its divisors is an integer number (3566430).

Almost surely, 2^87111995 is an apocalyptic number.

87111995 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

87111995 is a deficient number, since it is larger than the sum of its proper divisors (27013765).

87111995 is a wasteful number, since it uses less digits than its factorization.

87111995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its digits is 22680, while the sum is 41.

The square root of 87111995 is about 9333.3806844037. The cubic root of 87111995 is about 443.2948167240.

The spelling of 87111995 in words is "eighty-seven million, one hundred eleven thousand, nine hundred ninety-five".