263479 has 4 divisors (see below), whose sum is σ = 265176. Its totient is φ = 261784.

The previous prime is 263443. The next prime is 263489. The reversal of 263479 is 974362.

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 263479 - 2¹¹ = 261431 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 6² + 4⁹ + 3⁶ + 7² + 9 .

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 263479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263429) 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, 589 + ... + 934.

It is an arithmetic number, because the mean of its divisors is an integer number (66294).

2²⁶³⁴⁷⁹ is an apocalyptic number.

263479 is a deficient number, since it is larger than the sum of its proper divisors (1697).

263479 is a wasteful number, since it uses less digits than its factorization.

263479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696.

The product of its digits is 9072, while the sum is 31.

The square root of 263479 is about 513.3020553242. The cubic root of 263479 is about 64.1084586730.

The spelling of 263479 in words is "two hundred sixty-three thousand, four hundred seventy-nine".