646626112 has 56 divisors (see below), whose sum is σ = 1420794720. Its totient is φ = 289512960.

The previous prime is 646626103. The next prime is 646626121. The reversal of 646626112 is 211626646.

It is an interprime number because it is at equal distance from previous prime (646626103) and next prime (646626121).

It is a congruent number.

It is an unprimeable number.

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, 40314 + ... + 54022.

Almost surely, 2^646626112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646626112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710397360).

646626112 is an abundant number, since it is smaller than the sum of its proper divisors (774168608).

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

646626112 is a wasteful number, since it uses less digits than its factorization.

646626112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13799 (or 13789 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 646626112 is about 25428.8440948463. The cubic root of 646626112 is about 864.7377386621.

The spelling of 646626112 in words is "six hundred forty-six million, six hundred twenty-six thousand, one hundred twelve".