6455780 has 24 divisors (see below), whose sum is σ = 13789440. Its totient is φ = 2538080.

The previous prime is 6455773. The next prime is 6455789. The reversal of 6455780 is 875546.

It is a self number, because there is not a number n which added to its sum of digits gives 6455780.

It is not an unprimeable number, because it can be changed into a prime (6455789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1556 + ... + 3915.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^6455780 is an apocalyptic number.

It is an amenable number.

6455780 is an abundant number, since it is smaller than the sum of its proper divisors (7333660).

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

6455780 is a wasteful number, since it uses less digits than its factorization.

6455780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5539 (or 5537 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 6455780 is about 2540.8227014099. The cubic root of 6455780 is about 186.2013851466.

The spelling of 6455780 in words is "six million, four hundred fifty-five thousand, seven hundred eighty".