6638964 has 24 divisors (see below), whose sum is σ = 15532608. Its totient is φ = 2207040.

The previous prime is 6638953. The next prime is 6638977. The reversal of 6638964 is 4698366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8344 + ... + 9104.

It is an arithmetic number, because the mean of its divisors is an integer number (647192).

Almost surely, 2^6638964 is an apocalyptic number.

It is an amenable number.

6638964 is an abundant number, since it is smaller than the sum of its proper divisors (8893644).

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

6638964 is a wasteful number, since it uses less digits than its factorization.

6638964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1493 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 6638964 is about 2576.6187145171. The cubic root of 6638964 is about 187.9461517727.

The spelling of 6638964 in words is "six million, six hundred thirty-eight thousand, nine hundred sixty-four".