646111244 has 6 divisors (see below), whose sum is σ = 1130694684. Its totient is φ = 323055620.

The previous prime is 646111243. The next prime is 646111267. The reversal of 646111244 is 442111646.

It is not an unprimeable number, because it can be changed into a prime (646111243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80763902 + ... + 80763909.

It is an arithmetic number, because the mean of its divisors is an integer number (188449114).

Almost surely, 2^646111244 is an apocalyptic number.

It is an amenable number.

646111244 is a deficient number, since it is larger than the sum of its proper divisors (484583440).

646111244 is a wasteful number, since it uses less digits than its factorization.

646111244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161527815 (or 161527813 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 646111244 is about 25418.7183783919. The cubic root of 646111244 is about 864.5081654963.

The spelling of 646111244 in words is "six hundred forty-six million, one hundred eleven thousand, two hundred forty-four".