86659820 has 36 divisors (see below), whose sum is σ = 197069040. Its totient is φ = 31996224.

The previous prime is 86659799. The next prime is 86659843. The reversal of 86659820 is 2895668.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9440 + ... + 16199.

It is an arithmetic number, because the mean of its divisors is an integer number (5474140).

Almost surely, 2^86659820 is an apocalyptic number.

It is an amenable number.

86659820 is an abundant number, since it is smaller than the sum of its proper divisors (110409220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86659820 is a wasteful number, since it uses less digits than its factorization.

86659820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25674 (or 25659 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 86659820 is about 9309.1256302620. The cubic root of 86659820 is about 442.5264776096.

The spelling of 86659820 in words is "eighty-six million, six hundred fifty-nine thousand, eight hundred twenty".