213610564 has 12 divisors (see below), whose sum is σ = 380872044. Its totient is φ = 104789984.

The previous prime is 213610561. The next prime is 213610577. The reversal of 213610564 is 465016312.

It can be written as a sum of positive squares in 2 ways, for example, as 87272964 + 126337600 = 9342^2 + 11240^2 .

It is not an unprimeable number, because it can be changed into a prime (213610561) 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 3 ways as a sum of consecutive naturals, for example, 503587 + ... + 504010.

It is an arithmetic number, because the mean of its divisors is an integer number (31739337).

Almost surely, 2^213610564 is an apocalyptic number.

It is an amenable number.

213610564 is a deficient number, since it is larger than the sum of its proper divisors (167261480).

213610564 is a wasteful number, since it uses less digits than its factorization.

213610564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007654 (or 1007652 counting only the distinct ones).

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

The square root of 213610564 is about 14615.4221286968. The cubic root of 213610564 is about 597.7793505924.

Adding to 213610564 its reverse (465016312), we get a palindrome (678626876).

The spelling of 213610564 in words is "two hundred thirteen million, six hundred ten thousand, five hundred sixty-four".