664004626231 has 2 divisors, whose sum is σ = 664004626232. Its totient is φ = 664004626230.

The previous prime is 664004626183. The next prime is 664004626249. The reversal of 664004626231 is 132626400466.

664004626231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664004626231 - 2¹¹ = 664004624183 is a prime.

It is a super-2 number, since 2×664004626231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664004626261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332002313115 + 332002313116.

It is an arithmetic number, because the mean of its divisors is an integer number (332002313116).

Almost surely, 2^664004626231 is an apocalyptic number.

664004626231 is a deficient number, since it is larger than the sum of its proper divisors (1).

664004626231 is an equidigital number, since it uses as much as digits as its factorization.

664004626231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 664004626231 in words is "six hundred sixty-four billion, four million, six hundred twenty-six thousand, two hundred thirty-one".