6845990 has 8 divisors (see below), whose sum is σ = 12322800. Its totient is φ = 2738392.

The previous prime is 6845983. The next prime is 6846017. The reversal of 6845990 is 995486.

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

It is a Curzon number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 342290 + ... + 342309.

It is an arithmetic number, because the mean of its divisors is an integer number (1540350).

Almost surely, 2^6845990 is an apocalyptic number.

6845990 is a deficient number, since it is larger than the sum of its proper divisors (5476810).

6845990 is a wasteful number, since it uses less digits than its factorization.

6845990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684606.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 6845990 is about 2616.4842823912. The cubic root of 6845990 is about 189.8797946965.

The spelling of 6845990 in words is "six million, eight hundred forty-five thousand, nine hundred ninety".