891263 has 4 divisors (see below), whose sum is σ = 903888. Its totient is φ = 878640.

The previous prime is 891251. The next prime is 891277. The reversal of 891263 is 362198.

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 891263 - 2¹⁴ = 874879 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 (891223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6206 + ... + 6347.

It is an arithmetic number, because the mean of its divisors is an integer number (225972).

2⁸⁹¹²⁶³ is an apocalyptic number.

891263 is a deficient number, since it is larger than the sum of its proper divisors (12625).

891263 is a wasteful number, since it uses less digits than its factorization.

891263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12624.

The product of its digits is 2592, while the sum is 29.

The square root of 891263 is about 944.0672645527. The cubic root of 891263 is about 96.2354967746.

The spelling of 891263 in words is "eight hundred ninety-one thousand, two hundred sixty-three".