82643337 has 12 divisors (see below), whose sum is σ = 136427200. Its totient is φ = 47224728.

The previous prime is 82643329. The next prime is 82643339. The reversal of 82643337 is 73334628.

82643337 is a `hidden beast` number, since 8 + 2 + 643 + 3 + 3 + 7 = 666.

It is not a de Polignac number, because 82643337 - 2³ = 82643329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82643339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 655837 + ... + 655962.

Almost surely, 2^82643337 is an apocalyptic number.

It is an amenable number.

82643337 is a deficient number, since it is larger than the sum of its proper divisors (53783863).

82643337 is a wasteful number, since it uses less digits than its factorization.

82643337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311812 (or 1311809 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 82643337 is about 9090.8380801772. The cubic root of 82643337 is about 435.5813550849.

The spelling of 82643337 in words is "eighty-two million, six hundred forty-three thousand, three hundred thirty-seven".