6690525 has 24 divisors (see below), whose sum is σ = 11365344. Its totient is φ = 3470400.

The previous prime is 6690517. The next prime is 6690557. The reversal of 6690525 is 5250966.

It is not a de Polignac number, because 6690525 - 2³ = 6690517 is a prime.

6690525 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1570 + ... + 3980.

It is an arithmetic number, because the mean of its divisors is an integer number (473556).

Almost surely, 2^6690525 is an apocalyptic number.

It is an amenable number.

6690525 is a deficient number, since it is larger than the sum of its proper divisors (4674819).

6690525 is a wasteful number, since it uses less digits than its factorization.

6690525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461 (or 2456 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 6690525 is about 2586.6049176478. The cubic root of 6690525 is about 188.4314539917.

The spelling of 6690525 in words is "six million, six hundred ninety thousand, five hundred twenty-five".