855486985 has 8 divisors (see below), whose sum is σ = 1034421696. Its totient is φ = 679164720.

The previous prime is 855486977. The next prime is 855487007. The reversal of 855486985 is 589684558.

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

It is not a de Polignac number, because 855486985 - 2³ = 855486977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652389 + ... + 653698.

It is an arithmetic number, because the mean of its divisors is an integer number (129302712).

Almost surely, 2^855486985 is an apocalyptic number.

It is an amenable number.

855486985 is a deficient number, since it is larger than the sum of its proper divisors (178934711).

855486985 is a wasteful number, since it uses less digits than its factorization.

855486985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306223.

The product of its digits is 13824000, while the sum is 58.

The square root of 855486985 is about 29248.7091168140. The cubic root of 855486985 is about 949.3021597207.

The spelling of 855486985 in words is "eight hundred fifty-five million, four hundred eighty-six thousand, nine hundred eighty-five".