865495911 has 32 divisors (see below), whose sum is σ = 1385422848. Its totient is φ = 469893600.

The previous prime is 865495903. The next prime is 865495927. The reversal of 865495911 is 119594568.

It is not a de Polignac number, because 865495911 - 2³ = 865495903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865495901) 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, 67000 + ... + 78866.

It is an arithmetic number, because the mean of its divisors is an integer number (43294464).

Almost surely, 2^865495911 is an apocalyptic number.

865495911 is a deficient number, since it is larger than the sum of its proper divisors (519926937).

865495911 is a wasteful number, since it uses less digits than its factorization.

865495911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12051.

The product of its digits is 388800, while the sum is 48.

The square root of 865495911 is about 29419.3118716261. The cubic root of 865495911 is about 952.9899926536.

The spelling of 865495911 in words is "eight hundred sixty-five million, four hundred ninety-five thousand, nine hundred eleven".