855629 has 6 divisors (see below), whose sum is σ = 878730. Its totient is φ = 833120.

The previous prime is 855619. The next prime is 855641. The reversal of 855629 is 926558.

855629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 4 + 855625 = 2^2 + 925^2 .

It is not a de Polignac number, because 855629 - 2⁸ = 855373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1427 + ... + 1935.

It is an arithmetic number, because the mean of its divisors is an integer number (146455).

2⁸⁵⁵⁶²⁹ is an apocalyptic number.

It is an amenable number.

855629 is a deficient number, since it is larger than the sum of its proper divisors (23101).

855629 is an equidigital number, since it uses as much as digits as its factorization.

855629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 550 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 855629 is about 925.0021621596. The cubic root of 855629 is about 94.9354686406.

The spelling of 855629 in words is "eight hundred fifty-five thousand, six hundred twenty-nine".