213346664 has 16 divisors (see below), whose sum is σ = 400255620. Its totient is φ = 106611840.

The previous prime is 213346663. The next prime is 213346709. The reversal of 213346664 is 466643312.

It can be written as a sum of positive squares in 2 ways, for example, as 211469764 + 1876900 = 14542^2 + 1370^2 .

It is not an unprimeable number, because it can be changed into a prime (213346663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9254 + ... + 22634.

Almost surely, 2^213346664 is an apocalyptic number.

It is an amenable number.

213346664 is a deficient number, since it is larger than the sum of its proper divisors (186908956).

213346664 is a wasteful number, since it uses less digits than its factorization.

213346664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15380 (or 15376 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 213346664 is about 14606.3912038532. The cubic root of 213346664 is about 597.5330784719.

Adding to 213346664 its reverse (466643312), we get a palindrome (679989976).

The spelling of 213346664 in words is "two hundred thirteen million, three hundred forty-six thousand, six hundred sixty-four".