82804864 has 16 divisors (see below), whose sum is σ = 164963070. Its totient is φ = 41402368.

The previous prime is 82804861. The next prime is 82804873. The reversal of 82804864 is 46840828.

It can be written as a sum of positive squares in only one way, i.e., 70694464 + 12110400 = 8408^2 + 3480^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (82804861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323329 + ... + 323584.

Almost surely, 2^82804864 is an apocalyptic number.

It is an amenable number.

82804864 is a deficient number, since it is larger than the sum of its proper divisors (82158206).

82804864 is an equidigital number, since it uses as much as digits as its factorization.

82804864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646927 (or 646915 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 82804864 is about 9099.7177978221. The cubic root of 82804864 is about 435.8649527036.

The spelling of 82804864 in words is "eighty-two million, eight hundred four thousand, eight hundred sixty-four".