646232642 has 16 divisors (see below), whose sum is σ = 1065802752. Its totient is φ = 291427920.

The previous prime is 646232641. The next prime is 646232651. The reversal of 646232642 is 246232646.

It is not an unprimeable number, because it can be changed into a prime (646232641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112853 + ... + 118440.

It is an arithmetic number, because the mean of its divisors is an integer number (66612672).

Almost surely, 2^646232642 is an apocalyptic number.

646232642 is a deficient number, since it is larger than the sum of its proper divisors (419570110).

646232642 is a wasteful number, since it uses less digits than its factorization.

646232642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231433.

The product of its digits is 82944, while the sum is 35.

The square root of 646232642 is about 25421.1062308468. The cubic root of 646232642 is about 864.5623063226.

The spelling of 646232642 in words is "six hundred forty-six million, two hundred thirty-two thousand, six hundred forty-two".