87151866 has 16 divisors (see below), whose sum is σ = 175029888. Its totient is φ = 28929600.

The previous prime is 87151849. The next prime is 87151891. The reversal of 87151866 is 66815178.

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, 28690 + ... + 31581.

It is an arithmetic number, because the mean of its divisors is an integer number (10939368).

Almost surely, 2^87151866 is an apocalyptic number.

87151866 is an abundant number, since it is smaller than the sum of its proper divisors (87878022).

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

87151866 is a wasteful number, since it uses less digits than its factorization.

87151866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60517.

The product of its digits is 80640, while the sum is 42.

The square root of 87151866 is about 9335.5163756484. The cubic root of 87151866 is about 443.3624381493.

The spelling of 87151866 in words is "eighty-seven million, one hundred fifty-one thousand, eight hundred sixty-six".