268146691 has 2 divisors, whose sum is σ = 268146692. Its totient is φ = 268146690.

The previous prime is 268146577. The next prime is 268146727. The reversal of 268146691 is 196641862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 268146691 - 2¹⁹ = 267622403 is a prime.

It is not a weakly prime, because it can be changed into another prime (268146391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134073345 + 134073346.

It is an arithmetic number, because the mean of its divisors is an integer number (134073346).

Almost surely, 2^268146691 is an apocalyptic number.

268146691 is a deficient number, since it is larger than the sum of its proper divisors (1).

268146691 is an equidigital number, since it uses as much as digits as its factorization.

268146691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 268146691 is about 16375.1852203265. The cubic root of 268146691 is about 644.8481833263.

The spelling of 268146691 in words is "two hundred sixty-eight million, one hundred forty-six thousand, six hundred ninety-one".