664935045 has 16 divisors (see below), whose sum is σ = 1068353280. Its totient is φ = 353146304.

The previous prime is 664935041. The next prime is 664935071. The reversal of 664935045 is 540539466.

It is a cyclic number.

It is not a de Polignac number, because 664935045 - 2² = 664935041 is a prime.

It is a super-2 number, since 2×664935045² = 884277228138304050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 664934988 and 664935006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664935041) 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 15 ways as a sum of consecutive naturals, for example, 89154 + ... + 96323.

It is an arithmetic number, because the mean of its divisors is an integer number (66772080).

Almost surely, 2^664935045 is an apocalyptic number.

It is an amenable number.

664935045 is a deficient number, since it is larger than the sum of its proper divisors (403418235).

664935045 is a wasteful number, since it uses less digits than its factorization.

664935045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185724.

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 664935045 is about 25786.3344622690. The cubic root of 664935045 is about 872.8234534988.

The spelling of 664935045 in words is "six hundred sixty-four million, nine hundred thirty-five thousand, forty-five".