6739644 has 24 divisors (see below), whose sum is σ = 16410240. Its totient is φ = 2148784.

The previous prime is 6739643. The next prime is 6739709. The reversal of 6739644 is 4469376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6739643) 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, 11934 + ... + 12485.

It is an arithmetic number, because the mean of its divisors is an integer number (683760).

Almost surely, 2^6739644 is an apocalyptic number.

It is an amenable number.

6739644 is an abundant number, since it is smaller than the sum of its proper divisors (9670596).

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

6739644 is a wasteful number, since it uses less digits than its factorization.

6739644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24449 (or 24447 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 6739644 is about 2596.0824332058. The cubic root of 6739644 is about 188.8914580709.

The spelling of 6739644 in words is "six million, seven hundred thirty-nine thousand, six hundred forty-four".