87206015 has 16 divisors (see below), whose sum is σ = 112891968. Its totient is φ = 64286976.

The previous prime is 87205999. The next prime is 87206023. The reversal of 87206015 is 51060278.

It is not a de Polignac number, because 87206015 - 2⁴ = 87205999 is a prime.

It is a Duffinian number.

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, 70694 + ... + 71916.

It is an arithmetic number, because the mean of its divisors is an integer number (7055748).

Almost surely, 2^87206015 is an apocalyptic number.

87206015 is a deficient number, since it is larger than the sum of its proper divisors (25685953).

87206015 is a wasteful number, since it uses less digits than its factorization.

87206015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 87206015 is about 9338.4160862536. The cubic root of 87206015 is about 443.4542421207.

The spelling of 87206015 in words is "eighty-seven million, two hundred six thousand, fifteen".