6644701340 has 12 divisors (see below), whose sum is σ = 13953872856. Its totient is φ = 2657880528.

The previous prime is 6644701321. The next prime is 6644701381. The reversal of 6644701340 is 431074466.

It is a self number, because there is not a number n which added to its sum of digits gives 6644701340.

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 3 ways as a sum of consecutive naturals, for example, 166117514 + ... + 166117553.

It is an arithmetic number, because the mean of its divisors is an integer number (1162822738).

Almost surely, 2^6644701340 is an apocalyptic number.

It is an amenable number.

6644701340 is an abundant number, since it is smaller than the sum of its proper divisors (7309171516).

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

6644701340 is a wasteful number, since it uses less digits than its factorization.

6644701340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332235076 (or 332235074 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 6644701340 is about 81515.0375084254. The cubic root of 6644701340 is about 1880.0027670851.

The spelling of 6644701340 in words is "six billion, six hundred forty-four million, seven hundred one thousand, three hundred forty".