262891 has 4 divisors (see below), whose sum is σ = 264784. Its totient is φ = 261000.

The previous prime is 262883. The next prime is 262897. The reversal of 262891 is 198262.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198262 = 2 ⋅99131.

It is a cyclic number.

It is not a de Polignac number, because 262891 - 2³ = 262883 is a prime.

It is a super-2 number, since 2×262891² = 138223355762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (262897) 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, 720 + ... + 1021.

It is an arithmetic number, because the mean of its divisors is an integer number (66196).

2²⁶²⁸⁹¹ is an apocalyptic number.

262891 is a deficient number, since it is larger than the sum of its proper divisors (1893).

262891 is a wasteful number, since it uses less digits than its factorization.

262891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892.

The product of its digits is 1728, while the sum is 28.

The square root of 262891 is about 512.7289732402. The cubic root of 262891 is about 64.0607333639.

The spelling of 262891 in words is "two hundred sixty-two thousand, eight hundred ninety-one".