6664446 has 12 divisors (see below), whose sum is σ = 14439672. Its totient is φ = 2221476.

The previous prime is 6664429. The next prime is 6664447. The reversal of 6664446 is 6444666.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6664446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 185106 + ... + 185141.

It is an arithmetic number, because the mean of its divisors is an integer number (1203306).

Almost surely, 2^6664446 is an apocalyptic number.

6664446 is an abundant number, since it is smaller than the sum of its proper divisors (7775226).

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

6664446 is a wasteful number, since it uses less digits than its factorization.

6664446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370255 (or 370252 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 6664446 is about 2581.5588314040. The cubic root of 6664446 is about 188.1863061821.

The spelling of 6664446 in words is "six million, six hundred sixty-four thousand, four hundred forty-six".