82619864 has 64 divisors (see below), whose sum is σ = 174363840. Its totient is φ = 36495360.

The previous prime is 82619863. The next prime is 82619891. The reversal of 82619864 is 46891628.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82619863) 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, 190592 + ... + 191024.

It is an arithmetic number, because the mean of its divisors is an integer number (2724435).

Almost surely, 2^82619864 is an apocalyptic number.

It is an amenable number.

82619864 is an abundant number, since it is smaller than the sum of its proper divisors (91743976).

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

82619864 is a wasteful number, since it uses less digits than its factorization.

82619864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 536 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 82619864 is about 9089.5469634080. The cubic root of 82619864 is about 435.5401121177.

The spelling of 82619864 in words is "eighty-two million, six hundred nineteen thousand, eight hundred sixty-four".