6904990 has 16 divisors (see below), whose sum is σ = 12529152. Its totient is φ = 2739744.

The previous prime is 6904981. The next prime is 6904993. The reversal of 6904990 is 994096.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6904993) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1449 + ... + 3988.

It is an arithmetic number, because the mean of its divisors is an integer number (783072).

Almost surely, 2^6904990 is an apocalyptic number.

6904990 is a deficient number, since it is larger than the sum of its proper divisors (5624162).

6904990 is a wasteful number, since it uses less digits than its factorization.

6904990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 6904990 is about 2627.7347659153. The cubic root of 6904990 is about 190.4237081499.

The spelling of 6904990 in words is "six million, nine hundred four thousand, nine hundred ninety".