6690566 has 8 divisors (see below), whose sum is σ = 10078560. Its totient is φ = 3331048.

The previous prime is 6690559. The next prime is 6690569. The reversal of 6690566 is 6650966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6690569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6521 + ... + 7476.

It is an arithmetic number, because the mean of its divisors is an integer number (1259820).

Almost surely, 2^6690566 is an apocalyptic number.

6690566 is a deficient number, since it is larger than the sum of its proper divisors (3387994).

6690566 is a wasteful number, since it uses less digits than its factorization.

6690566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14238.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 6690566 is about 2586.6128430826. The cubic root of 6690566 is about 188.4318388979.

The spelling of 6690566 in words is "six million, six hundred ninety thousand, five hundred sixty-six".