855686274 has 8 divisors (see below), whose sum is σ = 1711372560. Its totient is φ = 285228756.

The previous prime is 855686243. The next prime is 855686287. The reversal of 855686274 is 472686558.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

855686274 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71307184 + ... + 71307195.

It is an arithmetic number, because the mean of its divisors is an integer number (213921570).

Almost surely, 2^855686274 is an apocalyptic number.

855686274 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855686274 is a wasteful number, since it uses less digits than its factorization.

855686274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142614384.

The product of its digits is 3225600, while the sum is 51.

The square root of 855686274 is about 29252.1157183545. The cubic root of 855686274 is about 949.3758685333.

It can be divided in two parts, 8556 and 86274, that added together give a triangular number (94830 = T₄₃₅).

The spelling of 855686274 in words is "eight hundred fifty-five million, six hundred eighty-six thousand, two hundred seventy-four".