664141983 has 8 divisors (see below), whose sum is σ = 890641968. Its totient is φ = 440201664.

The previous prime is 664141981. The next prime is 664141991. The reversal of 664141983 is 389141466.

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

It is not a de Polignac number, because 664141983 - 2¹ = 664141981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664141981) 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, 639310 + ... + 640347.

It is an arithmetic number, because the mean of its divisors is an integer number (111330246).

Almost surely, 2^664141983 is an apocalyptic number.

664141983 is a deficient number, since it is larger than the sum of its proper divisors (226499985).

664141983 is a wasteful number, since it uses less digits than its factorization.

664141983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279833.

The product of its digits is 124416, while the sum is 42.

The square root of 664141983 is about 25770.9523106928. The cubic root of 664141983 is about 872.4763125782.

The spelling of 664141983 in words is "six hundred sixty-four million, one hundred forty-one thousand, nine hundred eighty-three".