6444860 has 12 divisors (see below), whose sum is σ = 13534248. Its totient is φ = 2577936.

The previous prime is 6444859. The next prime is 6444863. The reversal of 6444860 is 684446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161102 + ... + 161141.

It is an arithmetic number, because the mean of its divisors is an integer number (1127854).

Almost surely, 2^6444860 is an apocalyptic number.

It is an amenable number.

6444860 is an abundant number, since it is smaller than the sum of its proper divisors (7089388).

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

6444860 is a wasteful number, since it uses less digits than its factorization.

6444860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322252 (or 322250 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 6444860 is about 2538.6728816451. The cubic root of 6444860 is about 186.0963388851.

The spelling of 6444860 in words is "six million, four hundred forty-four thousand, eight hundred sixty".