664202002 has 16 divisors (see below), whose sum is σ = 1061636760. Its totient is φ = 310572288.

The previous prime is 664201991. The next prime is 664202003. The reversal of 664202002 is 200202466.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 415792881 + 248409121 = 20391^2 + 15761^2 .

It is not an unprimeable number, because it can be changed into a prime (664202003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56877 + ... + 67552.

Almost surely, 2^664202002 is an apocalyptic number.

664202002 is a deficient number, since it is larger than the sum of its proper divisors (397434758).

664202002 is a wasteful number, since it uses less digits than its factorization.

664202002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124605.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 664202002 is about 25772.1167543529. The cubic root of 664202002 is about 872.5025938955.

Adding to 664202002 its reverse (200202466), we get a palindrome (864404468).

The spelling of 664202002 in words is "six hundred sixty-four million, two hundred two thousand, two".