257367763 has 2 divisors, whose sum is σ = 257367764. Its totient is φ = 257367762.

The previous prime is 257367757. The next prime is 257367809. The reversal of 257367763 is 367763752.

It is an a-pointer prime, because the next prime (257367809) can be obtained adding 257367763 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257367763 - 2⁹ = 257367251 is a prime.

It is not a weakly prime, because it can be changed into another prime (257367163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128683881 + 128683882.

It is an arithmetic number, because the mean of its divisors is an integer number (128683882).

Almost surely, 2^257367763 is an apocalyptic number.

257367763 is a deficient number, since it is larger than the sum of its proper divisors (1).

257367763 is an equidigital number, since it uses as much as digits as its factorization.

257367763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1111320, while the sum is 46.

The square root of 257367763 is about 16042.6856542164. The cubic root of 257367763 is about 636.0892401115.

The spelling of 257367763 in words is "two hundred fifty-seven million, three hundred sixty-seven thousand, seven hundred sixty-three".