86665992 has 96 divisors (see below), whose sum is σ = 261518400. Its totient is φ = 23442048.

The previous prime is 86665967. The next prime is 86665993. The reversal of 86665992 is 29956668.

It is not an unprimeable number, because it can be changed into a prime (86665993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59934 + ... + 61362.

It is an arithmetic number, because the mean of its divisors is an integer number (2724150).

Almost surely, 2^86665992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86665992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130759200).

86665992 is an abundant number, since it is smaller than the sum of its proper divisors (174852408).

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

86665992 is a wasteful number, since it uses less digits than its factorization.

86665992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1460 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 86665992 is about 9309.4571270295. The cubic root of 86665992 is about 442.5369830879.

The spelling of 86665992 in words is "eighty-six million, six hundred sixty-five thousand, nine hundred ninety-two".