855371647 has 8 divisors (see below), whose sum is σ = 934919216. Its totient is φ = 777788352.

The previous prime is 855371603. The next prime is 855371681. The reversal of 855371647 is 746173558.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-855371647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 855371597 and 855371606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855371687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490158 + ... + 491899.

It is an arithmetic number, because the mean of its divisors is an integer number (116864902).

Almost surely, 2^855371647 is an apocalyptic number.

855371647 is a deficient number, since it is larger than the sum of its proper divisors (79547569).

855371647 is a wasteful number, since it uses less digits than its factorization.

855371647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982137.

The product of its digits is 705600, while the sum is 46.

The square root of 855371647 is about 29246.7373735943. The cubic root of 855371647 is about 949.2594957039.

It can be divided in two parts, 8553 and 71647, that added together give a triangular number (80200 = T₄₀₀).

The spelling of 855371647 in words is "eight hundred fifty-five million, three hundred seventy-one thousand, six hundred forty-seven".