6999957 has 12 divisors (see below), whose sum is σ = 10134540. Its totient is φ = 4655808.

The previous prime is 6999929. The next prime is 6999973. The reversal of 6999957 is 7599996.

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 5574321 = 1194^2 + 2361^2 .

It is not a de Polignac number, because 6999957 - 2⁷ = 6999829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5833 + ... + 6929.

It is an arithmetic number, because the mean of its divisors is an integer number (844545).

Almost surely, 2^6999957 is an apocalyptic number.

It is an amenable number.

6999957 is a deficient number, since it is larger than the sum of its proper divisors (3134583).

6999957 is a wasteful number, since it uses less digits than its factorization.

6999957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812 (or 1809 counting only the distinct ones).

The product of its digits is 1377810, while the sum is 54.

The square root of 6999957 is about 2645.7431848159. The cubic root of 6999957 is about 191.2927265810.

The spelling of 6999957 in words is "six million, nine hundred ninety-nine thousand, nine hundred fifty-seven".