6516420 has 48 divisors (see below), whose sum is σ = 18529728. Its totient is φ = 1710720.

The previous prime is 6516401. The next prime is 6516421. The reversal of 6516420 is 246156.

6516420 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (6516421) 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, 3210 + ... + 4830.

It is an arithmetic number, because the mean of its divisors is an integer number (386036).

Almost surely, 2^6516420 is an apocalyptic number.

6516420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6516420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9264864).

6516420 is an abundant number, since it is smaller than the sum of its proper divisors (12013308).

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

6516420 is a wasteful number, since it uses less digits than its factorization.

6516420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 6516420 is about 2552.7279526029. The cubic root of 6516420 is about 186.7825739896.

The spelling of 6516420 in words is "six million, five hundred sixteen thousand, four hundred twenty".