87165699 has 16 divisors (see below), whose sum is σ = 121492224. Its totient is φ = 55484000.

The previous prime is 87165691. The next prime is 87165703. The reversal of 87165699 is 99656178.

It is a cyclic number.

It is not a de Polignac number, because 87165699 - 2³ = 87165691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87165691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66349 + ... + 67649.

It is an arithmetic number, because the mean of its divisors is an integer number (7593264).

Almost surely, 2^87165699 is an apocalyptic number.

87165699 is a deficient number, since it is larger than the sum of its proper divisors (34326525).

87165699 is a wasteful number, since it uses less digits than its factorization.

87165699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298.

The product of its digits is 816480, while the sum is 51.

The square root of 87165699 is about 9336.2572265336. The cubic root of 87165699 is about 443.3858941709.

The spelling of 87165699 in words is "eighty-seven million, one hundred sixty-five thousand, six hundred ninety-nine".