664052113 has 24 divisors (see below), whose sum is σ = 753358536. Its totient is φ = 582912000.

The previous prime is 664052111. The next prime is 664052149. The reversal of 664052113 is 311250466.

It can be written as a sum of positive squares in 4 ways, for example, as 1658944 + 662393169 = 1288^2 + 25737^2 .

It is not a de Polignac number, because 664052113 - 2¹ = 664052111 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (664052111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367813 + ... + 369613.

It is an arithmetic number, because the mean of its divisors is an integer number (31389939).

Almost surely, 2^664052113 is an apocalyptic number.

It is an amenable number.

664052113 is a deficient number, since it is larger than the sum of its proper divisors (89306423).

664052113 is a wasteful number, since it uses less digits than its factorization.

664052113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905 (or 1882 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 664052113 is about 25769.2086219193. The cubic root of 664052113 is about 872.4369570462.

The spelling of 664052113 in words is "six hundred sixty-four million, fifty-two thousand, one hundred thirteen".