855651013 has 16 divisors (see below), whose sum is σ = 987367680. Its totient is φ = 726336000.

The previous prime is 855650977. The next prime is 855651019. The reversal of 855651013 is 310156558.

It is a cyclic number.

It is not a de Polignac number, because 855651013 - 2²¹ = 853553861 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 855651013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855651019) 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 15 ways as a sum of consecutive naturals, for example, 410133 + ... + 412213.

It is an arithmetic number, because the mean of its divisors is an integer number (61710480).

Almost surely, 2^855651013 is an apocalyptic number.

It is an amenable number.

855651013 is a deficient number, since it is larger than the sum of its proper divisors (131716667).

855651013 is a wasteful number, since it uses less digits than its factorization.

855651013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 855651013 is about 29251.5130036038. The cubic root of 855651013 is about 949.3628277716.

The spelling of 855651013 in words is "eight hundred fifty-five million, six hundred fifty-one thousand, thirteen".