664110311 has 2 divisors, whose sum is σ = 664110312. Its totient is φ = 664110310.

The previous prime is 664110301. The next prime is 664110323. The reversal of 664110311 is 113011466.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664110311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664110301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332055155 + 332055156.

It is an arithmetic number, because the mean of its divisors is an integer number (332055156).

Almost surely, 2^664110311 is an apocalyptic number.

664110311 is a deficient number, since it is larger than the sum of its proper divisors (1).

664110311 is an equidigital number, since it uses as much as digits as its factorization.

664110311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 664110311 is about 25770.3378130749. The cubic root of 664110311 is about 872.4624433004.

Adding to 664110311 its reverse (113011466), we get a palindrome (777121777).

The spelling of 664110311 in words is "six hundred sixty-four million, one hundred ten thousand, three hundred eleven".