6420060 has 72 divisors (see below), whose sum is σ = 20210736. Its totient is φ = 1710720.

The previous prime is 6420053. The next prime is 6420061. The reversal of 6420060 is 600246.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4200 + ... + 5520.

Almost surely, 2^6420060 is an apocalyptic number.

6420060 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 6420060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10105368).

6420060 is an abundant number, since it is smaller than the sum of its proper divisors (13790676).

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

6420060 is a wasteful number, since it uses less digits than its factorization.

6420060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 6420060 is about 2533.7837318919. The cubic root of 6420060 is about 185.8573307616.

The spelling of 6420060 in words is "six million, four hundred twenty thousand, sixty".