664144063 has 8 divisors (see below), whose sum is σ = 725121360. Its totient is φ = 603266880.

The previous prime is 664144057. The next prime is 664144097. The reversal of 664144063 is 360441466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664144063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664144163) 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, 10798 + ... + 38011.

It is an arithmetic number, because the mean of its divisors is an integer number (90640170).

Almost surely, 2^664144063 is an apocalyptic number.

664144063 is a deficient number, since it is larger than the sum of its proper divisors (60977297).

664144063 is a wasteful number, since it uses less digits than its factorization.

664144063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50057.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 664144063 is about 25770.9926661741. The cubic root of 664144063 is about 872.4772234019.

The spelling of 664144063 in words is "six hundred sixty-four million, one hundred forty-four thousand, sixty-three".