855966351 has 4 divisors (see below), whose sum is σ = 1141288472. Its totient is φ = 570644232.

The previous prime is 855966347. The next prime is 855966373. The reversal of 855966351 is 153669558.

It is a happy number.

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

It is not a de Polignac number, because 855966351 - 2² = 855966347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 855966351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855966341) 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, 142661056 + ... + 142661061.

It is an arithmetic number, because the mean of its divisors is an integer number (285322118).

Almost surely, 2^855966351 is an apocalyptic number.

855966351 is a deficient number, since it is larger than the sum of its proper divisors (285322121).

855966351 is a wasteful number, since it uses less digits than its factorization.

855966351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285322120.

The product of its digits is 972000, while the sum is 48.

The square root of 855966351 is about 29256.9026214328. The cubic root of 855966351 is about 949.4794381662.

The spelling of 855966351 in words is "eight hundred fifty-five million, nine hundred sixty-six thousand, three hundred fifty-one".