268765807 has 2 divisors, whose sum is σ = 268765808. Its totient is φ = 268765806.

The previous prime is 268765793. The next prime is 268765837. The reversal of 268765807 is 708567862.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268765807 is a prime.

It is a super-2 number, since 2×268765807² = 144470118024722498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268765837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134382903 + 134382904.

It is an arithmetic number, because the mean of its divisors is an integer number (134382904).

Almost surely, 2^268765807 is an apocalyptic number.

268765807 is a deficient number, since it is larger than the sum of its proper divisors (1).

268765807 is an equidigital number, since it uses as much as digits as its factorization.

268765807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The square root of 268765807 is about 16394.0784126464. The cubic root of 268765807 is about 645.3440921871.

The spelling of 268765807 in words is "two hundred sixty-eight million, seven hundred sixty-five thousand, eight hundred seven".