646233612 has 24 divisors (see below), whose sum is σ = 1508497200. Its totient is φ = 215322816.

The previous prime is 646233589. The next prime is 646233619. The reversal of 646233612 is 216332646.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (646233619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23814 + ... + 43122.

It is an arithmetic number, because the mean of its divisors is an integer number (62854050).

Almost surely, 2^646233612 is an apocalyptic number.

It is an amenable number.

646233612 is an abundant number, since it is smaller than the sum of its proper divisors (862263588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646233612 is a wasteful number, since it uses less digits than its factorization.

646233612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22105 (or 22103 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 646233612 is about 25421.1253094744. The cubic root of 646233612 is about 864.5627388939.

The spelling of 646233612 in words is "six hundred forty-six million, two hundred thirty-three thousand, six hundred twelve".