213340564 has 12 divisors (see below), whose sum is σ = 373670388. Its totient is φ = 106577600.

The previous prime is 213340553. The next prime is 213340573. The reversal of 213340564 is 465043312.

213340564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 179024400 + 34316164 = 13380^2 + 5858^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17857 + ... + 27304.

It is an arithmetic number, because the mean of its divisors is an integer number (31139199).

Almost surely, 2^213340564 is an apocalyptic number.

It is an amenable number.

213340564 is a deficient number, since it is larger than the sum of its proper divisors (160329824).

213340564 is a wasteful number, since it uses less digits than its factorization.

213340564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46346 (or 46344 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 213340564 is about 14606.1823896595. The cubic root of 213340564 is about 597.5273835363.

Adding to 213340564 its reverse (465043312), we get a palindrome (678383876).

The spelling of 213340564 in words is "two hundred thirteen million, three hundred forty thousand, five hundred sixty-four".