268723739 has 2 divisors, whose sum is σ = 268723740. Its totient is φ = 268723738.

The previous prime is 268723723. The next prime is 268723757. The reversal of 268723739 is 937327862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268723739 - 2⁴ = 268723723 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 268723693 and 268723702.

It is not a weakly prime, because it can be changed into another prime (268726739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134361869 + 134361870.

It is an arithmetic number, because the mean of its divisors is an integer number (134361870).

Almost surely, 2^268723739 is an apocalyptic number.

268723739 is a deficient number, since it is larger than the sum of its proper divisors (1).

268723739 is an equidigital number, since it uses as much as digits as its factorization.

268723739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 47.

The square root of 268723739 is about 16392.7953381966. The cubic root of 268723739 is about 645.3104200567.

The spelling of 268723739 in words is "two hundred sixty-eight million, seven hundred twenty-three thousand, seven hundred thirty-nine".