855965 has 16 divisors (see below), whose sum is σ = 1140480. Its totient is φ = 611520.

The previous prime is 855947. The next prime is 855983. The reversal of 855965 is 569558.

It is an interprime number because it is at equal distance from previous prime (855947) and next prime (855983).

It is not a de Polignac number, because 855965 - 2⁶ = 855901 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 855965.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4247 + ... + 4443.

It is an arithmetic number, because the mean of its divisors is an integer number (71280).

2⁸⁵⁵⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

855965 is a deficient number, since it is larger than the sum of its proper divisors (284515).

855965 is a wasteful number, since it uses less digits than its factorization.

855965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292.

The product of its digits is 54000, while the sum is 38.

The square root of 855965 is about 925.1837655299. The cubic root of 855965 is about 94.9478938634.

The spelling of 855965 in words is "eight hundred fifty-five thousand, nine hundred sixty-five".