6890566 has 4 divisors (see below), whose sum is σ = 10335852. Its totient is φ = 3445282.

The previous prime is 6890549. The next prime is 6890579. The reversal of 6890566 is 6650986.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1722640 + ... + 1722643.

It is an arithmetic number, because the mean of its divisors is an integer number (2583963).

Almost surely, 2^6890566 is an apocalyptic number.

6890566 is a deficient number, since it is larger than the sum of its proper divisors (3445286).

6890566 is a wasteful number, since it uses less digits than its factorization.

6890566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3445285.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 6890566 is about 2624.9887618807. The cubic root of 6890566 is about 190.2910221591.

The spelling of 6890566 in words is "six million, eight hundred ninety thousand, five hundred sixty-six".