865349111 has 16 divisors (see below), whose sum is σ = 961271808. Its totient is φ = 772351200.

The previous prime is 865349099. The next prime is 865349117. The reversal of 865349111 is 111943568.

It is a cyclic number.

It is not a de Polignac number, because 865349111 - 2¹⁰ = 865348087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865349117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551450 + ... + 553016.

It is an arithmetic number, because the mean of its divisors is an integer number (60079488).

Almost surely, 2^865349111 is an apocalyptic number.

865349111 is a deficient number, since it is larger than the sum of its proper divisors (95922697).

865349111 is a wasteful number, since it uses less digits than its factorization.

865349111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462.

The product of its digits is 25920, while the sum is 38.

The square root of 865349111 is about 29416.8168060380. The cubic root of 865349111 is about 952.9361095408.

The spelling of 865349111 in words is "eight hundred sixty-five million, three hundred forty-nine thousand, one hundred eleven".