87267815 has 16 divisors (see below), whose sum is σ = 108626400. Its totient is φ = 67224192.

The previous prime is 87267751. The next prime is 87267841. The reversal of 87267815 is 51876278.

It is a cyclic number.

It is not a de Polignac number, because 87267815 - 2⁶ = 87267751 is a prime.

It is a congruent 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, 81101 + ... + 82169.

It is an arithmetic number, because the mean of its divisors is an integer number (6789150).

Almost surely, 2^87267815 is an apocalyptic number.

87267815 is a deficient number, since it is larger than the sum of its proper divisors (21358585).

87267815 is a wasteful number, since it uses less digits than its factorization.

87267815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666.

The product of its digits is 188160, while the sum is 44.

The square root of 87267815 is about 9341.7244125483. The cubic root of 87267815 is about 443.5589711387.

The spelling of 87267815 in words is "eighty-seven million, two hundred sixty-seven thousand, eight hundred fifteen".