646326012 has 12 divisors (see below), whose sum is σ = 1508094056. Its totient is φ = 215442000.

The previous prime is 646326011. The next prime is 646326047. The reversal of 646326012 is 210623646.

646326012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646326011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26930239 + ... + 26930262.

Almost surely, 2^646326012 is an apocalyptic number.

It is an amenable number.

646326012 is an abundant number, since it is smaller than the sum of its proper divisors (861768044).

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

646326012 is a wasteful number, since it uses less digits than its factorization.

646326012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53860508 (or 53860506 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 646326012 is about 25422.9426306240. The cubic root of 646326012 is about 864.6039426673.

Adding to 646326012 its reverse (210623646), we get a palindrome (856949658).

The spelling of 646326012 in words is "six hundred forty-six million, three hundred twenty-six thousand, twelve".