215434065 has 64 divisors (see below), whose sum is σ = 452413440. Its totient is φ = 84810240.

The previous prime is 215434061. The next prime is 215434067. The reversal of 215434065 is 560434512.

215434065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215434065 - 2² = 215434061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215434061) 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, 17037 + ... + 26853.

It is an arithmetic number, because the mean of its divisors is an integer number (7068960).

Almost surely, 2^215434065 is an apocalyptic number.

It is an amenable number.

215434065 is an abundant number, since it is smaller than the sum of its proper divisors (236979375).

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

215434065 is a wasteful number, since it uses less digits than its factorization.

215434065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9862.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 215434065 is about 14677.6723290854. The cubic root of 215434065 is about 599.4755277929.

Adding to 215434065 its reverse (560434512), we get a palindrome (775868577).

The spelling of 215434065 in words is "two hundred fifteen million, four hundred thirty-four thousand, sixty-five".