262987 has 4 divisors (see below), whose sum is σ = 264040. Its totient is φ = 261936.

The previous prime is 262981. The next prime is 263009. The reversal of 262987 is 789262.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 789262 = 2 ⋅394631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-262987 is a prime.

It is a Duffinian number.

262987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (262981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88 + ... + 730.

It is an arithmetic number, because the mean of its divisors is an integer number (66010).

2²⁶²⁹⁸⁷ is an apocalyptic number.

262987 is a deficient number, since it is larger than the sum of its proper divisors (1053).

262987 is an equidigital number, since it uses as much as digits as its factorization.

262987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052.

The product of its digits is 12096, while the sum is 34.

The square root of 262987 is about 512.8225814061. The cubic root of 262987 is about 64.0685301086.

The spelling of 262987 in words is "two hundred sixty-two thousand, nine hundred eighty-seven".