82566393 has 32 divisors (see below), whose sum is σ = 140179200. Its totient is φ = 42045696.

The previous prime is 82566391. The next prime is 82566401. The reversal of 82566393 is 39366528.

It is not a de Polignac number, because 82566393 - 2¹ = 82566391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82566391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2703 + ... + 13131.

It is an arithmetic number, because the mean of its divisors is an integer number (4380600).

Almost surely, 2^82566393 is an apocalyptic number.

It is an amenable number.

82566393 is a deficient number, since it is larger than the sum of its proper divisors (57612807).

82566393 is a wasteful number, since it uses less digits than its factorization.

82566393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481.

The product of its digits is 233280, while the sum is 42.

The square root of 82566393 is about 9086.6051416357. The cubic root of 82566393 is about 435.4461323323.

The spelling of 82566393 in words is "eighty-two million, five hundred sixty-six thousand, three hundred ninety-three".