82605784 has 8 divisors (see below), whose sum is σ = 154885860. Its totient is φ = 41302888.

The previous prime is 82605769. The next prime is 82605791. The reversal of 82605784 is 48750628.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5162854 + ... + 5162869.

Almost surely, 2^82605784 is an apocalyptic number.

It is an amenable number.

82605784 is a deficient number, since it is larger than the sum of its proper divisors (72280076).

82605784 is a wasteful number, since it uses less digits than its factorization.

82605784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10325729 (or 10325725 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 82605784 is about 9088.7724143583. The cubic root of 82605784 is about 435.5153692658.

The spelling of 82605784 in words is "eighty-two million, six hundred five thousand, seven hundred eighty-four".