257070763 has 2 divisors, whose sum is σ = 257070764. Its totient is φ = 257070762.

The previous prime is 257070739. The next prime is 257070767. The reversal of 257070763 is 367070752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 257070763 - 2⁵ = 257070731 is a prime.

It is not a weakly prime, because it can be changed into another prime (257070767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128535381 + 128535382.

It is an arithmetic number, because the mean of its divisors is an integer number (128535382).

Almost surely, 2^257070763 is an apocalyptic number.

257070763 is a deficient number, since it is larger than the sum of its proper divisors (1).

257070763 is an equidigital number, since it uses as much as digits as its factorization.

257070763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 257070763 is about 16033.4264273112. The cubic root of 257070763 is about 635.8444655797.

The spelling of 257070763 in words is "two hundred fifty-seven million, seventy thousand, seven hundred sixty-three".