6890820 has 24 divisors (see below), whose sum is σ = 19294464. Its totient is φ = 1837536.

The previous prime is 6890813. The next prime is 6890833. The reversal of 6890820 is 280986.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57364 + ... + 57483.

It is an arithmetic number, because the mean of its divisors is an integer number (803936).

Almost surely, 2^6890820 is an apocalyptic number.

6890820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6890820 is an abundant number, since it is smaller than the sum of its proper divisors (12403644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6890820 is a wasteful number, since it uses less digits than its factorization.

6890820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114859 (or 114857 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 6890820 is about 2625.0371425944. The cubic root of 6890820 is about 190.2933602992.

The spelling of 6890820 in words is "six million, eight hundred ninety thousand, eight hundred twenty".