6644007634 has 24 divisors (see below), whose sum is σ = 10973272464. Its totient is φ = 3014794200.

The previous prime is 6644007611. The next prime is 6644007673. The reversal of 6644007634 is 4367004466.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118669 + ... + 165439.

It is an arithmetic number, because the mean of its divisors is an integer number (457219686).

Almost surely, 2^6644007634 is an apocalyptic number.

6644007634 is a deficient number, since it is larger than the sum of its proper divisors (4329264830).

6644007634 is a wasteful number, since it uses less digits than its factorization.

6644007634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47382 (or 47371 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 40.

The square root of 6644007634 is about 81510.7823174333. The cubic root of 6644007634 is about 1879.9373407893.

The spelling of 6644007634 in words is "six billion, six hundred forty-four million, seven thousand, six hundred thirty-four".