6939656 has 8 divisors (see below), whose sum is σ = 13011870. Its totient is φ = 3469824.

The previous prime is 6939649. The next prime is 6939677. The reversal of 6939656 is 6569396.

It can be written as a sum of positive squares in only one way, i.e., 6400900 + 538756 = 2530^2 + 734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433721 + ... + 433736.

Almost surely, 2^6939656 is an apocalyptic number.

It is an amenable number.

6939656 is a deficient number, since it is larger than the sum of its proper divisors (6072214).

6939656 is a wasteful number, since it uses less digits than its factorization.

6939656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867463 (or 867459 counting only the distinct ones).

The product of its digits is 262440, while the sum is 44.

The square root of 6939656 is about 2634.3226833477. The cubic root of 6939656 is about 190.7418458049.

The spelling of 6939656 in words is "six million, nine hundred thirty-nine thousand, six hundred fifty-six".