6455620 has 12 divisors (see below), whose sum is σ = 13556844. Its totient is φ = 2582240.

The previous prime is 6455593. The next prime is 6455623. The reversal of 6455620 is 265546.

It can be written as a sum of positive squares in 2 ways, for example, as 1473796 + 4981824 = 1214^2 + 2232^2 .

It is not an unprimeable number, because it can be changed into a prime (6455623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161371 + ... + 161410.

It is an arithmetic number, because the mean of its divisors is an integer number (1129737).

Almost surely, 2^6455620 is an apocalyptic number.

It is an amenable number.

6455620 is an abundant number, since it is smaller than the sum of its proper divisors (7101224).

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

6455620 is a wasteful number, since it uses less digits than its factorization.

6455620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322790 (or 322788 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 6455620 is about 2540.7912153501. The cubic root of 6455620 is about 186.1998468627.

The spelling of 6455620 in words is "six million, four hundred fifty-five thousand, six hundred twenty".