6699956 has 6 divisors (see below), whose sum is σ = 11724930. Its totient is φ = 3349976.

The previous prime is 6699949. The next prime is 6699961. The reversal of 6699956 is 6599966.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6584356 + 115600 = 2566^2 + 340^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 837491 + ... + 837498.

It is an arithmetic number, because the mean of its divisors is an integer number (1954155).

Almost surely, 2^6699956 is an apocalyptic number.

It is an amenable number.

6699956 is a deficient number, since it is larger than the sum of its proper divisors (5024974).

6699956 is a wasteful number, since it uses less digits than its factorization.

6699956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1674993 (or 1674991 counting only the distinct ones).

The product of its digits is 787320, while the sum is 50.

The square root of 6699956 is about 2588.4273217535. The cubic root of 6699956 is about 188.5199504198.

The spelling of 6699956 in words is "six million, six hundred ninety-nine thousand, nine hundred fifty-six".