213792565 has 32 divisors (see below), whose sum is σ = 299335680. Its totient is φ = 143567424.

The previous prime is 213792563. The next prime is 213792571. The reversal of 213792565 is 565297312.

It is not a de Polignac number, because 213792565 - 2¹ = 213792563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213792563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461524 + ... + 461986.

It is an arithmetic number, because the mean of its divisors is an integer number (9354240).

Almost surely, 2^213792565 is an apocalyptic number.

It is an amenable number.

213792565 is a deficient number, since it is larger than the sum of its proper divisors (85543115).

213792565 is a wasteful number, since it uses less digits than its factorization.

213792565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721.

The product of its digits is 113400, while the sum is 40.

The square root of 213792565 is about 14621.6471370362. The cubic root of 213792565 is about 597.9490762108.

The spelling of 213792565 in words is "two hundred thirteen million, seven hundred ninety-two thousand, five hundred sixty-five".