664052111 has 2 divisors, whose sum is σ = 664052112. Its totient is φ = 664052110.

The previous prime is 664052107. The next prime is 664052149. The reversal of 664052111 is 111250466.

664052111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 664052111 - 2² = 664052107 is a prime.

It is a super-2 number, since 2×664052111² = 881930412247112642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664052101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332026055 + 332026056.

It is an arithmetic number, because the mean of its divisors is an integer number (332026056).

Almost surely, 2^664052111 is an apocalyptic number.

664052111 is a deficient number, since it is larger than the sum of its proper divisors (1).

664052111 is an equidigital number, since it uses as much as digits as its factorization.

664052111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 664052111 is about 25769.2085831133. The cubic root of 664052111 is about 872.4369561703.

The spelling of 664052111 in words is "six hundred sixty-four million, fifty-two thousand, one hundred eleven".