855426685 has 8 divisors (see below), whose sum is σ = 1030017240. Its totient is φ = 682004544.

The previous prime is 855426667. The next prime is 855426703. The reversal of 855426685 is 586624558.

It is an interprime number because it is at equal distance from previous prime (855426667) and next prime (855426703).

It can be written as a sum of positive squares in 4 ways, for example, as 456505956 + 398920729 = 21366^2 + 19973^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 855426685 - 2²⁵ = 821872253 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290490 + ... + 293419.

It is an arithmetic number, because the mean of its divisors is an integer number (128752155).

Almost surely, 2^855426685 is an apocalyptic number.

It is an amenable number.

855426685 is a deficient number, since it is larger than the sum of its proper divisors (174590555).

855426685 is a wasteful number, since it uses less digits than its factorization.

855426685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584207.

The product of its digits is 2304000, while the sum is 49.

The square root of 855426685 is about 29247.6782839254. The cubic root of 855426685 is about 949.2798549726.

The spelling of 855426685 in words is "eight hundred fifty-five million, four hundred twenty-six thousand, six hundred eighty-five".