6434624644 has 24 divisors (see below), whose sum is σ = 13626264960. Its totient is φ = 2595478656.

The previous prime is 6434624641. The next prime is 6434624659. The reversal of 6434624644 is 4464264346.

It is a self number, because there is not a number n which added to its sum of digits gives 6434624644.

It is not an unprimeable number, because it can be changed into a prime (6434624641) 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, 6758584 + ... + 6759535.

It is an arithmetic number, because the mean of its divisors is an integer number (567761040).

Almost surely, 2^6434624644 is an apocalyptic number.

It is an amenable number.

6434624644 is an abundant number, since it is smaller than the sum of its proper divisors (7191640316).

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

6434624644 is a wasteful number, since it uses less digits than its factorization.

6434624644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13518147 (or 13518145 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 43.

The square root of 6434624644 is about 80216.1121221915. The cubic root of 6434624644 is about 1859.9777085238.

The spelling of 6434624644 in words is "six billion, four hundred thirty-four million, six hundred twenty-four thousand, six hundred forty-four".