263795823 has 12 divisors (see below), whose sum is σ = 381206280. Its totient is φ = 175786416.

The previous prime is 263795813. The next prime is 263795827. The reversal of 263795823 is 328597362.

263795823 is a `hidden beast` number, since 2 + 63 + 7 + 9 + 582 + 3 = 666.

It is not a de Polignac number, because 263795823 - 2¹² = 263791727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263795827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21465 + ... + 31437.

It is an arithmetic number, because the mean of its divisors is an integer number (31767190).

Almost surely, 2^263795823 is an apocalyptic number.

263795823 is a deficient number, since it is larger than the sum of its proper divisors (117410457).

263795823 is a wasteful number, since it uses less digits than its factorization.

263795823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12918 (or 12915 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 263795823 is about 16241.7924811272. The cubic root of 263795823 is about 641.3414433619.

The spelling of 263795823 in words is "two hundred sixty-three million, seven hundred ninety-five thousand, eight hundred twenty-three".