86621518 has 12 divisors (see below), whose sum is σ = 130645872. Its totient is φ = 43073960.

The previous prime is 86621503. The next prime is 86621531. The reversal of 86621518 is 81512668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200763 + ... + 201193.

It is an arithmetic number, because the mean of its divisors is an integer number (10887156).

Almost surely, 2^86621518 is an apocalyptic number.

86621518 is a deficient number, since it is larger than the sum of its proper divisors (44024354).

86621518 is an equidigital number, since it uses as much as digits as its factorization.

86621518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 750 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 86621518 is about 9307.0681742426. The cubic root of 86621518 is about 442.4612718933.

The spelling of 86621518 in words is "eighty-six million, six hundred twenty-one thousand, five hundred eighteen".