6920780 has 12 divisors (see below), whose sum is σ = 14533680. Its totient is φ = 2768304.

The previous prime is 6920773. The next prime is 6920791. The reversal of 6920780 is 870296.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 173000 + ... + 173039.

It is an arithmetic number, because the mean of its divisors is an integer number (1211140).

Almost surely, 2^6920780 is an apocalyptic number.

It is an amenable number.

6920780 is an abundant number, since it is smaller than the sum of its proper divisors (7612900).

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

6920780 is a wasteful number, since it uses less digits than its factorization.

6920780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346048 (or 346046 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 6920780 is about 2630.7375391703. The cubic root of 6920780 is about 190.5687482504.

The spelling of 6920780 in words is "six million, nine hundred twenty thousand, seven hundred eighty".