82399866 has 8 divisors (see below), whose sum is σ = 164799744. Its totient is φ = 27466620.

The previous prime is 82399843. The next prime is 82399871. The reversal of 82399866 is 66899328.

It is a sphenic number, since it is the product of 3 distinct primes.

82399866 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6866650 + ... + 6866661.

It is an arithmetic number, because the mean of its divisors is an integer number (20599968).

Almost surely, 2^82399866 is an apocalyptic number.

82399866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

82399866 is a wasteful number, since it uses less digits than its factorization.

82399866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13733316.

The product of its digits is 1119744, while the sum is 51.

The square root of 82399866 is about 9077.4371933933. The cubic root of 82399866 is about 435.1531868992.

The spelling of 82399866 in words is "eighty-two million, three hundred ninety-nine thousand, eight hundred sixty-six".