6477920 has 24 divisors (see below), whose sum is σ = 15304464. Its totient is φ = 2591104.

The previous prime is 6477871. The next prime is 6477929. The reversal of 6477920 is 297746.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6477929) 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, 20084 + ... + 20403.

It is an arithmetic number, because the mean of its divisors is an integer number (637686).

Almost surely, 2^6477920 is an apocalyptic number.

It is an amenable number.

6477920 is an abundant number, since it is smaller than the sum of its proper divisors (8826544).

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

6477920 is a wasteful number, since it uses less digits than its factorization.

6477920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40502 (or 40494 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 6477920 is about 2545.1758288967. The cubic root of 6477920 is about 186.4140005571.

The spelling of 6477920 in words is "six million, four hundred seventy-seven thousand, nine hundred twenty".