262691 has 12 divisors (see below), whose sum is σ = 312816. Its totient is φ = 219120.

The previous prime is 262681. The next prime is 262693. The reversal of 262691 is 196262.

It is not a de Polignac number, because 262691 - 2⁶ = 262627 is a prime.

It is a super-2 number, since 2×262691² = 138013122962, which contains 22 as substring.

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 262691.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 262691.

It is not an unprimeable number, because it can be changed into a prime (262693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1490 + ... + 1656.

It is an arithmetic number, because the mean of its divisors is an integer number (26068).

2²⁶²⁶⁹¹ is an apocalyptic number.

262691 is a deficient number, since it is larger than the sum of its proper divisors (50125).

262691 is a wasteful number, since it uses less digits than its factorization.

262691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 191 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 262691 is about 512.5339013178. The cubic root of 262691 is about 64.0444840476.

The spelling of 262691 in words is "two hundred sixty-two thousand, six hundred ninety-one".