263655923 has 8 divisors (see below), whose sum is σ = 276811008. Its totient is φ = 250641864.

The previous prime is 263655911. The next prime is 263655929. The reversal of 263655923 is 329556362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 263655923 - 2²⁴ = 246878707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263655929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31415 + ... + 38912.

It is an arithmetic number, because the mean of its divisors is an integer number (34601376).

Almost surely, 2^263655923 is an apocalyptic number.

263655923 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

263655923 is a deficient number, since it is larger than the sum of its proper divisors (13155085).

263655923 is a wasteful number, since it uses less digits than its factorization.

263655923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70513.

The product of its digits is 291600, while the sum is 41.

The square root of 263655923 is about 16237.4851193157. The cubic root of 263655923 is about 641.2280481702.

The spelling of 263655923 in words is "two hundred sixty-three million, six hundred fifty-five thousand, nine hundred twenty-three".