213701565 has 64 divisors (see below), whose sum is σ = 434460672. Its totient is φ = 87110400.

The previous prime is 213701563. The next prime is 213701597. The reversal of 213701565 is 565107312.

It is not a de Polignac number, because 213701565 - 2¹ = 213701563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213701563) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59470 + ... + 62960.

It is an arithmetic number, because the mean of its divisors is an integer number (6788448).

Almost surely, 2^213701565 is an apocalyptic number.

It is an amenable number.

213701565 is an abundant number, since it is smaller than the sum of its proper divisors (220759107).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213701565 is a wasteful number, since it uses less digits than its factorization.

213701565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 213701565 is about 14618.5349813174. The cubic root of 213701565 is about 597.8642259136.

Adding to 213701565 its reverse (565107312), we get a palindrome (778808877).

The spelling of 213701565 in words is "two hundred thirteen million, seven hundred one thousand, five hundred sixty-five".