68763257 has 2 divisors, whose sum is σ = 68763258. Its totient is φ = 68763256.

The previous prime is 68763241. The next prime is 68763271. The reversal of 68763257 is 75236786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64336441 + 4426816 = 8021^2 + 2104^2 .

It is a cyclic number.

It is not a de Polignac number, because 68763257 - 2⁴ = 68763241 is a prime.

It is not a weakly prime, because it can be changed into another prime (68763217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34381628 + 34381629.

It is an arithmetic number, because the mean of its divisors is an integer number (34381629).

Almost surely, 2^68763257 is an apocalyptic number.

It is an amenable number.

68763257 is a deficient number, since it is larger than the sum of its proper divisors (1).

68763257 is an equidigital number, since it uses as much as digits as its factorization.

68763257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The square root of 68763257 is about 8292.3613645330. The cubic root of 68763257 is about 409.6869651040.

The spelling of 68763257 in words is "sixty-eight million, seven hundred sixty-three thousand, two hundred fifty-seven".