6690975 has 12 divisors (see below), whose sum is σ = 11062536. Its totient is φ = 3568480.

The previous prime is 6690973. The next prime is 6690989. The reversal of 6690975 is 5790966.

It is not a de Polignac number, because 6690975 - 2¹ = 6690973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690973) 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, 44532 + ... + 44681.

It is an arithmetic number, because the mean of its divisors is an integer number (921878).

Almost surely, 2^6690975 is an apocalyptic number.

6690975 is a deficient number, since it is larger than the sum of its proper divisors (4371561).

6690975 is a wasteful number, since it uses less digits than its factorization.

6690975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89226 (or 89221 counting only the distinct ones).

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

The square root of 6690975 is about 2586.6919027979. The cubic root of 6690975 is about 188.4356784859.

Subtracting from 6690975 its reverse (5790966), we obtain a palindrome (900009).

The spelling of 6690975 in words is "six million, six hundred ninety thousand, nine hundred seventy-five".