664231041 has 12 divisors (see below), whose sum is σ = 963565668. Its totient is φ = 440918784.

The previous prime is 664231039. The next prime is 664231049. The reversal of 664231041 is 140132466.

664231041 is a `hidden beast` number, since 6 + 642 + 3 + 10 + 4 + 1 = 666.

664231041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 310640625 + 353590416 = 17625^2 + 18804^2 .

It is not a de Polignac number, because 664231041 - 2¹ = 664231039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664230996 and 664231014.

It is not an unprimeable number, because it can be changed into a prime (664231049) 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, 156280 + ... + 160473.

It is an arithmetic number, because the mean of its divisors is an integer number (80297139).

Almost surely, 2^664231041 is an apocalyptic number.

It is an amenable number.

664231041 is a deficient number, since it is larger than the sum of its proper divisors (299334627).

664231041 is a wasteful number, since it uses less digits than its factorization.

664231041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316992 (or 316989 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 664231041 is about 25772.6801283840. The cubic root of 664231041 is about 872.5153090200.

The spelling of 664231041 in words is "six hundred sixty-four million, two hundred thirty-one thousand, forty-one".