856010111 has 4 divisors (see below), whose sum is σ = 933829224. Its totient is φ = 778191000.

The previous prime is 856010101. The next prime is 856010117. The reversal of 856010111 is 111010658.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 856010111 - 2¹⁸ = 855747967 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 (856010117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38909540 + ... + 38909561.

It is an arithmetic number, because the mean of its divisors is an integer number (233457306).

Almost surely, 2^856010111 is an apocalyptic number.

856010111 is a deficient number, since it is larger than the sum of its proper divisors (77819113).

856010111 is a wasteful number, since it uses less digits than its factorization.

856010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77819112.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 856010111 is about 29257.6504695780. The cubic root of 856010111 is about 949.4956181294.

Adding to 856010111 its reverse (111010658), we get a palindrome (967020769).

The spelling of 856010111 in words is "eight hundred fifty-six million, ten thousand, one hundred eleven".