664123141 has 12 divisors (see below), whose sum is σ = 730610496. Its totient is φ = 603232520.

The previous prime is 664123123. The next prime is 664123147. The reversal of 664123141 is 141321466.

It is not a de Polignac number, because 664123141 - 2¹¹ = 664121093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664123147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270180 + ... + 272626.

It is an arithmetic number, because the mean of its divisors is an integer number (60884208).

Almost surely, 2^664123141 is an apocalyptic number.

It is an amenable number.

664123141 is a deficient number, since it is larger than the sum of its proper divisors (66487355).

664123141 is a wasteful number, since it uses less digits than its factorization.

664123141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4712 (or 4701 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 664123141 is about 25770.5867414772. The cubic root of 664123141 is about 872.4680616547.

The spelling of 664123141 in words is "six hundred sixty-four million, one hundred twenty-three thousand, one hundred forty-one".