86387615 has 16 divisors (see below), whose sum is σ = 108210816. Its totient is φ = 66144000.

The previous prime is 86387611. The next prime is 86387629. The reversal of 86387615 is 51678368.

It is not a de Polignac number, because 86387615 - 2² = 86387611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86387611) 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, 6890 + ... + 14840.

It is an arithmetic number, because the mean of its divisors is an integer number (6763176).

Almost surely, 2^86387615 is an apocalyptic number.

86387615 is a deficient number, since it is larger than the sum of its proper divisors (21823201).

86387615 is a wasteful number, since it uses less digits than its factorization.

86387615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050.

The product of its digits is 241920, while the sum is 44.

The square root of 86387615 is about 9294.4938000948. The cubic root of 86387615 is about 442.0626553413.

The spelling of 86387615 in words is "eighty-six million, three hundred eighty-seven thousand, six hundred fifteen".