6440060 has 48 divisors (see below), whose sum is σ = 14992992. Its totient is φ = 2304000.

The previous prime is 6440041. The next prime is 6440089. The reversal of 6440060 is 600446.

6440060 = T₄₃₃ + T₄₃₄ + ... + T₄₉₂.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15860 + ... + 16260.

It is an arithmetic number, because the mean of its divisors is an integer number (312354).

Almost surely, 2^6440060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6440060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7496496).

6440060 is an abundant number, since it is smaller than the sum of its proper divisors (8552932).

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

6440060 is a wasteful number, since it uses less digits than its factorization.

6440060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 6440060 is about 2537.7273297185. The cubic root of 6440060 is about 186.0501271608.

6440060 divided by its sum of digits (20) gives a triangular number (322003 = T₈₀₂).

The spelling of 6440060 in words is "six million, four hundred forty thousand, sixty".