82643307 has 24 divisors (see below), whose sum is σ = 117888000. Its totient is φ = 51486336.

The previous prime is 82643299. The next prime is 82643317. The reversal of 82643307 is 70334628.

It is not a de Polignac number, because 82643307 - 2³ = 82643299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82643317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172294 + ... + 172772.

It is an arithmetic number, because the mean of its divisors is an integer number (4912000).

Almost surely, 2^82643307 is an apocalyptic number.

82643307 is a deficient number, since it is larger than the sum of its proper divisors (35244693).

82643307 is a wasteful number, since it uses less digits than its factorization.

82643307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 82643307 is about 9090.8364301642. The cubic root of 82643307 is about 435.5813023787.

The spelling of 82643307 in words is "eighty-two million, six hundred forty-three thousand, three hundred seven".