6890819 has 4 divisors (see below), whose sum is σ = 7420896. Its totient is φ = 6360744.

The previous prime is 6890813. The next prime is 6890833. The reversal of 6890819 is 9180986.

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

It is a de Polignac number, because none of the positive numbers 2^k-6890819 is a prime.

It is a super-2 number, since 2×6890819² = 94966772981522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6890813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265019 + ... + 265044.

It is an arithmetic number, because the mean of its divisors is an integer number (1855224).

Almost surely, 2^6890819 is an apocalyptic number.

6890819 is a deficient number, since it is larger than the sum of its proper divisors (530077).

6890819 is a wasteful number, since it uses less digits than its factorization.

6890819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530076.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 6890819 is about 2625.0369521209. The cubic root of 6890819 is about 190.2933510940.

The spelling of 6890819 in words is "six million, eight hundred ninety thousand, eight hundred nineteen".