87766215 has 32 divisors (see below), whose sum is σ = 143078400. Its totient is φ = 45934464.

The previous prime is 87766169. The next prime is 87766241. The reversal of 87766215 is 51266778.

It is not a de Polignac number, because 87766215 - 2¹² = 87762119 is a prime.

It is a congruent number.

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, 238962 + ... + 239328.

It is an arithmetic number, because the mean of its divisors is an integer number (4471200).

Almost surely, 2^87766215 is an apocalyptic number.

87766215 is a deficient number, since it is larger than the sum of its proper divisors (55312185).

87766215 is a wasteful number, since it uses less digits than its factorization.

87766215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631.

The product of its digits is 141120, while the sum is 42.

The square root of 87766215 is about 9368.3624502898. The cubic root of 87766215 is about 444.4017800134.

The spelling of 87766215 in words is "eighty-seven million, seven hundred sixty-six thousand, two hundred fifteen".