6699957 has 16 divisors (see below), whose sum is σ = 10082880. Its totient is φ = 3920000.

The previous prime is 6699949. The next prime is 6699961. The reversal of 6699957 is 7599966.

It is a cyclic number.

It is not a de Polignac number, because 6699957 - 2³ = 6699949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6699907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2544 + ... + 4457.

It is an arithmetic number, because the mean of its divisors is an integer number (630180).

Almost surely, 2^6699957 is an apocalyptic number.

It is an amenable number.

6699957 is a deficient number, since it is larger than the sum of its proper divisors (3382923).

6699957 is a wasteful number, since it uses less digits than its factorization.

6699957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7044.

The product of its digits is 918540, while the sum is 51.

The square root of 6699957 is about 2588.4275149210. The cubic root of 6699957 is about 188.5199597990.

Subtracting 6699957 from its reverse (7599966), we obtain a palindrome (900009).

The spelling of 6699957 in words is "six million, six hundred ninety-nine thousand, nine hundred fifty-seven".