855006686 has 4 divisors (see below), whose sum is σ = 1282510032. Its totient is φ = 427503342.

The previous prime is 855006667. The next prime is 855006689. The reversal of 855006686 is 686600558.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855006689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213751670 + ... + 213751673.

It is an arithmetic number, because the mean of its divisors is an integer number (320627508).

Almost surely, 2^855006686 is an apocalyptic number.

855006686 is a deficient number, since it is larger than the sum of its proper divisors (427503346).

855006686 is a wasteful number, since it uses less digits than its factorization.

855006686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427503345.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 855006686 is about 29240.4973623911. The cubic root of 855006686 is about 949.1244698042.

The spelling of 855006686 in words is "eight hundred fifty-five million, six thousand, six hundred eighty-six".