6904891 has 8 divisors (see below), whose sum is σ = 7925984. Its totient is φ = 5892480.

The previous prime is 6904883. The next prime is 6904901. The reversal of 6904891 is 1984096.

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

It is a cyclic number.

It is not a de Polignac number, because 6904891 - 2³ = 6904883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6904891.

It is not an unprimeable number, because it can be changed into a prime (6904801) 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, 360 + ... + 3733.

It is an arithmetic number, because the mean of its divisors is an integer number (990748).

Almost surely, 2^6904891 is an apocalyptic number.

6904891 is a deficient number, since it is larger than the sum of its proper divisors (1021093).

6904891 is a wasteful number, since it uses less digits than its factorization.

6904891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 6904891 is about 2627.7159283302. The cubic root of 6904891 is about 190.4227980816.

The spelling of 6904891 in words is "six million, nine hundred four thousand, eight hundred ninety-one".