213328865 has 32 divisors (see below), whose sum is σ = 279400320. Its totient is φ = 155810304.

The previous prime is 213328861. The next prime is 213328897. The reversal of 213328865 is 568823312.

It is a cyclic number.

It is not a de Polignac number, because 213328865 - 2² = 213328861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213328861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 481334 + ... + 481776.

It is an arithmetic number, because the mean of its divisors is an integer number (8731260).

Almost surely, 2^213328865 is an apocalyptic number.

It is an amenable number.

213328865 is a deficient number, since it is larger than the sum of its proper divisors (66071455).

213328865 is a wasteful number, since it uses less digits than its factorization.

213328865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

The product of its digits is 69120, while the sum is 38.

The square root of 213328865 is about 14605.7819030684. The cubic root of 213328865 is about 597.5164610930.

The spelling of 213328865 in words is "two hundred thirteen million, three hundred twenty-eight thousand, eight hundred sixty-five".