87222715 has 16 divisors (see below), whose sum is σ = 106444800. Its totient is φ = 68601312.

The previous prime is 87222701. The next prime is 87222721. The reversal of 87222715 is 51722278.

It is a cyclic number.

It is not a de Polignac number, because 87222715 - 2¹⁷ = 87091643 is a prime.

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, 173154 + ... + 173656.

It is an arithmetic number, because the mean of its divisors is an integer number (6652800).

Almost surely, 2^87222715 is an apocalyptic number.

87222715 is a deficient number, since it is larger than the sum of its proper divisors (19222085).

87222715 is a wasteful number, since it uses less digits than its factorization.

87222715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026.

The product of its digits is 15680, while the sum is 34.

The square root of 87222715 is about 9339.3101993670. The cubic root of 87222715 is about 443.4825475580.

The spelling of 87222715 in words is "eighty-seven million, two hundred twenty-two thousand, seven hundred fifteen".