6456520 has 32 divisors (see below), whose sum is σ = 16603200. Its totient is φ = 2213568.

The previous prime is 6456511. The next prime is 6456521. The reversal of 6456520 is 256546.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (6456521) 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, 11250 + ... + 11809.

It is an arithmetic number, because the mean of its divisors is an integer number (518850).

Almost surely, 2^6456520 is an apocalyptic number.

It is an amenable number.

6456520 is an abundant number, since it is smaller than the sum of its proper divisors (10146680).

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

6456520 is a wasteful number, since it uses less digits than its factorization.

6456520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23077 (or 23073 counting only the distinct ones).

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

The square root of 6456520 is about 2540.9683193617. The cubic root of 6456520 is about 186.2084993792.

The spelling of 6456520 in words is "six million, four hundred fifty-six thousand, five hundred twenty".