6455220 has 48 divisors (see below), whose sum is σ = 18187008. Its totient is φ = 1710720.

The previous prime is 6455219. The next prime is 6455221. The reversal of 6455220 is 225546.

It is an interprime number because it is at equal distance from previous prime (6455219) and next prime (6455221).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6455221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16062 + ... + 16458.

It is an arithmetic number, because the mean of its divisors is an integer number (378896).

Almost surely, 2^6455220 is an apocalyptic number.

6455220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6455220 is an abundant number, since it is smaller than the sum of its proper divisors (11731788).

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

6455220 is a wasteful number, since it uses less digits than its factorization.

6455220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 6455220 is about 2540.7124984933. The cubic root of 6455220 is about 186.1960010417.

The spelling of 6455220 in words is "six million, four hundred fifty-five thousand, two hundred twenty".