646422606008 has 32 divisors (see below), whose sum is σ = 1265464460160. Its totient is φ = 308981518560.

The previous prime is 646422606001. The next prime is 646422606029. The reversal of 646422606008 is 800606224646.

It is a self number, because there is not a number n which added to its sum of digits gives 646422606008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646422606001) 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, 684038 + ... + 1326933.

It is an arithmetic number, because the mean of its divisors is an integer number (39545764380).

Almost surely, 2^646422606008 is an apocalyptic number.

It is an amenable number.

646422606008 is a deficient number, since it is larger than the sum of its proper divisors (619041854152).

646422606008 is a wasteful number, since it uses less digits than its factorization.

646422606008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012747 (or 2012743 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 646422606008 in words is "six hundred forty-six billion, four hundred twenty-two million, six hundred six thousand, eight".