6690957 has 16 divisors (see below), whose sum is σ = 10980480. Its totient is φ = 3529152.

The previous prime is 6690949. The next prime is 6690973. The reversal of 6690957 is 7590966.

6690957 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6690957 - 2³ = 6690949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690997) 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, 11982 + ... + 12527.

It is an arithmetic number, because the mean of its divisors is an integer number (686280).

Almost surely, 2^6690957 is an apocalyptic number.

It is an amenable number.

6690957 is a deficient number, since it is larger than the sum of its proper divisors (4289523).

6690957 is a wasteful number, since it uses less digits than its factorization.

6690957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24532.

The product of its (nonzero) digits is 102060, while the sum is 42.

The square root of 6690957 is about 2586.6884234480. The cubic root of 6690957 is about 188.4355095098.

Subtracting 6690957 from its reverse (7590966), we obtain a palindrome (900009).

It can be divided in two parts, 66909 and 57, that added together give a palindrome (66966).

The spelling of 6690957 in words is "six million, six hundred ninety thousand, nine hundred fifty-seven".