855707 has 4 divisors (see below), whose sum is σ = 861600. Its totient is φ = 849816.

The previous prime is 855697. The next prime is 855709. The reversal of 855707 is 707558.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 855707 - 2¹⁰ = 854683 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855709) by changing a digit.

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, 2723 + ... + 3020.

It is an arithmetic number, because the mean of its divisors is an integer number (215400).

2⁸⁵⁵⁷⁰⁷ is an apocalyptic number.

855707 is a deficient number, since it is larger than the sum of its proper divisors (5893).

855707 is a wasteful number, since it uses less digits than its factorization.

855707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 855707 is about 925.0443232624. The cubic root of 855707 is about 94.9383533572.

The spelling of 855707 in words is "eight hundred fifty-five thousand, seven hundred seven".