646246244 has 24 divisors (see below), whose sum is σ = 1298149440. Its totient is φ = 275750496.

The previous prime is 646246229. The next prime is 646246247. The reversal of 646246244 is 442642646.

646246244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 646246198 and 646246207.

It is not an unprimeable number, because it can be changed into a prime (646246247) 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, 43982 + ... + 56805.

It is an arithmetic number, because the mean of its divisors is an integer number (54089560).

Almost surely, 2^646246244 is an apocalyptic number.

It is an amenable number.

646246244 is an abundant number, since it is smaller than the sum of its proper divisors (651903196).

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

646246244 is a wasteful number, since it uses less digits than its factorization.

646246244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101027 (or 101025 counting only the distinct ones).

The product of its digits is 221184, while the sum is 38.

The square root of 646246244 is about 25421.3737630365. The cubic root of 646246244 is about 864.5683720917.

The spelling of 646246244 in words is "six hundred forty-six million, two hundred forty-six thousand, two hundred forty-four".