6890906 has 16 divisors (see below), whose sum is σ = 11389248. Its totient is φ = 3100800.

The previous prime is 6890861. The next prime is 6890957. The reversal of 6890906 is 6090986.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6890906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746 + ... + 3786.

It is an arithmetic number, because the mean of its divisors is an integer number (711828).

Almost surely, 2^6890906 is an apocalyptic number.

6890906 is a deficient number, since it is larger than the sum of its proper divisors (4498342).

6890906 is a wasteful number, since it uses less digits than its factorization.

6890906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 6890906 is about 2625.0535232639. The cubic root of 6890906 is about 190.2941519399.

The spelling of 6890906 in words is "six million, eight hundred ninety thousand, nine hundred six".