263993827 has 2 divisors, whose sum is σ = 263993828. Its totient is φ = 263993826.

The previous prime is 263993801. The next prime is 263993831. The reversal of 263993827 is 728399362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263993827 - 2¹¹ = 263991779 is a prime.

It is not a weakly prime, because it can be changed into another prime (263993027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131996913 + 131996914.

It is an arithmetic number, because the mean of its divisors is an integer number (131996914).

Almost surely, 2^263993827 is an apocalyptic number.

263993827 is a deficient number, since it is larger than the sum of its proper divisors (1).

263993827 is an equidigital number, since it uses as much as digits as its factorization.

263993827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 49.

The square root of 263993827 is about 16247.8868472180. The cubic root of 263993827 is about 641.5018659326.

The spelling of 263993827 in words is "two hundred sixty-three million, nine hundred ninety-three thousand, eight hundred twenty-seven".