213340664 has 16 divisors (see below), whose sum is σ = 421067400. Its totient is φ = 101056032.

The previous prime is 213340619. The next prime is 213340669. The reversal of 213340664 is 466043312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213340669) 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, 701627 + ... + 701930.

Almost surely, 2^213340664 is an apocalyptic number.

It is an amenable number.

213340664 is a deficient number, since it is larger than the sum of its proper divisors (207726736).

213340664 is a wasteful number, since it uses less digits than its factorization.

213340664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403582 (or 1403578 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 213340664 is about 14606.1858128671. The cubic root of 213340664 is about 597.5274768968.

Adding to 213340664 its reverse (466043312), we get a palindrome (679383976).

The spelling of 213340664 in words is "two hundred thirteen million, three hundred forty thousand, six hundred sixty-four".