856663119 has 24 divisors (see below), whose sum is σ = 1333572240. Its totient is φ = 526787712.

The previous prime is 856663111. The next prime is 856663141. The reversal of 856663119 is 911366658.

It is not a de Polignac number, because 856663119 - 2³ = 856663111 is a prime.

It is a super-2 number, since 2×856663119² = 1467743398909616322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856663111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 312547 + ... + 315275.

It is an arithmetic number, because the mean of its divisors is an integer number (55565510).

Almost surely, 2^856663119 is an apocalyptic number.

856663119 is a deficient number, since it is larger than the sum of its proper divisors (476909121).

856663119 is a wasteful number, since it uses less digits than its factorization.

856663119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431 (or 5428 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 856663119 is about 29268.8079531777. The cubic root of 856663119 is about 949.7369979256.

The spelling of 856663119 in words is "eight hundred fifty-six million, six hundred sixty-three thousand, one hundred nineteen".