82645868 has 12 divisors (see below), whose sum is σ = 147359520. Its totient is φ = 40543152.

The previous prime is 82645859. The next prime is 82645879. The reversal of 82645868 is 86854628.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194708 + ... + 195131.

It is an arithmetic number, because the mean of its divisors is an integer number (12279960).

Almost surely, 2^82645868 is an apocalyptic number.

It is an amenable number.

82645868 is a deficient number, since it is larger than the sum of its proper divisors (64713652).

82645868 is a wasteful number, since it uses less digits than its factorization.

82645868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389896 (or 389894 counting only the distinct ones).

The product of its digits is 737280, while the sum is 47.

The square root of 82645868 is about 9090.9772851988. The cubic root of 82645868 is about 435.5858016831.

The spelling of 82645868 in words is "eighty-two million, six hundred forty-five thousand, eight hundred sixty-eight".