6990957 has 12 divisors (see below), whose sum is σ = 10121020. Its totient is φ = 4650048.

The previous prime is 6990953. The next prime is 6990959. The reversal of 6990957 is 7590996.

It can be written as a sum of positive squares in 2 ways, for example, as 1887876 + 5103081 = 1374^2 + 2259^2 .

It is not a de Polignac number, because 6990957 - 2² = 6990953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990953) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 6993 + ... + 7929.

Almost surely, 2^6990957 is an apocalyptic number.

It is an amenable number.

6990957 is a deficient number, since it is larger than the sum of its proper divisors (3130063).

6990957 is a wasteful number, since it uses less digits than its factorization.

6990957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 6990957 is about 2644.0417924080. The cubic root of 6990957 is about 191.2107083193.

The spelling of 6990957 in words is "six million, nine hundred ninety thousand, nine hundred fifty-seven".