664050044 has 24 divisors (see below), whose sum is σ = 1329783168. Its totient is φ = 284232240.

The previous prime is 664050041. The next prime is 664050059. The reversal of 664050044 is 440050466.

It is a junction number, because it is equal to n+sod(n) for n = 664049989 and 664050016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664050041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8087 + ... + 37329.

It is an arithmetic number, because the mean of its divisors is an integer number (55407632).

Almost surely, 2^664050044 is an apocalyptic number.

It is an amenable number.

664050044 is an abundant number, since it is smaller than the sum of its proper divisors (665733124).

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

664050044 is a wasteful number, since it uses less digits than its factorization.

664050044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30065 (or 30063 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 664050044 is about 25769.1684770774. The cubic root of 664050044 is about 872.4360509557.

The spelling of 664050044 in words is "six hundred sixty-four million, fifty thousand, forty-four".