6420484 has 24 divisors (see below), whose sum is σ = 13285440. Its totient is φ = 2656416.

The previous prime is 6420467. The next prime is 6420487. The reversal of 6420484 is 4840246.

It is a super-2 number, since 2×6420484² = 82445229588512, which contains 22 as substring.

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 (6420487) 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, 3142 + ... + 4765.

It is an arithmetic number, because the mean of its divisors is an integer number (553560).

Almost surely, 2^6420484 is an apocalyptic number.

It is an amenable number.

6420484 is an abundant number, since it is smaller than the sum of its proper divisors (6864956).

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

6420484 is a wasteful number, since it uses less digits than its factorization.

6420484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7947 (or 7945 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 6420484 is about 2533.8673998455. The cubic root of 6420484 is about 185.8614221966.

The spelling of 6420484 in words is "six million, four hundred twenty thousand, four hundred eighty-four".