268702591 has 2 divisors, whose sum is σ = 268702592. Its totient is φ = 268702590.

The previous prime is 268702559. The next prime is 268702601. The reversal of 268702591 is 195207862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268702591 - 2⁵ = 268702559 is a prime.

It is a super-2 number, since 2×268702591² = 144402164820226562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268702501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134351295 + 134351296.

It is an arithmetic number, because the mean of its divisors is an integer number (134351296).

Almost surely, 2^268702591 is an apocalyptic number.

268702591 is a deficient number, since it is larger than the sum of its proper divisors (1).

268702591 is an equidigital number, since it uses as much as digits as its factorization.

268702591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 268702591 is about 16392.1502860363. The cubic root of 268702591 is about 645.2934914162.

The spelling of 268702591 in words is "two hundred sixty-eight million, seven hundred two thousand, five hundred ninety-one".