82904717 has 6 divisors (see below), whose sum is σ = 96440238. Its totient is φ = 71061144.

The previous prime is 82904687. The next prime is 82904729. The reversal of 82904717 is 71740928.

It can be written as a sum of positive squares in only one way, i.e., 47251876 + 35652841 = 6874^2 + 5971^2 .

It is a de Polignac number, because none of the positive numbers 2^k-82904717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82901717) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 845918 + ... + 846015.

It is an arithmetic number, because the mean of its divisors is an integer number (16073373).

Almost surely, 2^82904717 is an apocalyptic number.

It is an amenable number.

82904717 is a deficient number, since it is larger than the sum of its proper divisors (13535521).

82904717 is a wasteful number, since it uses less digits than its factorization.

82904717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691947 (or 1691940 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 82904717 is about 9105.2027434868. The cubic root of 82904717 is about 436.0400830781.

The spelling of 82904717 in words is "eighty-two million, nine hundred four thousand, seven hundred seventeen".