855687655 has 16 divisors (see below), whose sum is σ = 1041012000. Its totient is φ = 675145600.

The previous prime is 855687647. The next prime is 855687697. The reversal of 855687655 is 556786558.

It is not a de Polignac number, because 855687655 - 2³ = 855687647 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 855687596 and 855687605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132696 + ... + 138994.

It is an arithmetic number, because the mean of its divisors is an integer number (65063250).

Almost surely, 2^855687655 is an apocalyptic number.

855687655 is a deficient number, since it is larger than the sum of its proper divisors (185324345).

855687655 is a wasteful number, since it uses less digits than its factorization.

855687655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6674.

The product of its digits is 10080000, while the sum is 55.

The square root of 855687655 is about 29252.1393234751. The cubic root of 855687655 is about 949.3763792685.

The spelling of 855687655 in words is "eight hundred fifty-five million, six hundred eighty-seven thousand, six hundred fifty-five".