444664066 has 32 divisors (see below), whose sum is σ = 835857792. Its totient is φ = 172354560.

The previous prime is 444664063. The next prime is 444664079. The reversal of 444664066 is 660466444.

It is a happy number.

It is a super-2 number, since 2×444664066² = 395452263183304712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (444664063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23010 + ... + 37666.

It is an arithmetic number, because the mean of its divisors is an integer number (26120556).

Almost surely, 2^444664066 is an apocalyptic number.

444664066 is a deficient number, since it is larger than the sum of its proper divisors (391193726).

444664066 is a wasteful number, since it uses less digits than its factorization.

444664066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14874.

The product of its (nonzero) digits is 331776, while the sum is 40.

The square root of 444664066 is about 21087.0592070113. The cubic root of 444664066 is about 763.2685096307.

The spelling of 444664066 in words is "four hundred forty-four million, six hundred sixty-four thousand, sixty-six".