268106491 has 4 divisors (see below), whose sum is σ = 268268800. Its totient is φ = 267944184.

The previous prime is 268106483. The next prime is 268106497. The reversal of 268106491 is 194601862.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268106491 - 2³ = 268106483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 268106491.

It is not an unprimeable number, because it can be changed into a prime (268106497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78651 + ... + 81988.

It is an arithmetic number, because the mean of its divisors is an integer number (67067200).

Almost surely, 2^268106491 is an apocalyptic number.

268106491 is a deficient number, since it is larger than the sum of its proper divisors (162309).

268106491 is a wasteful number, since it uses less digits than its factorization.

268106491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162308.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 268106491 is about 16373.9577072863. The cubic root of 268106491 is about 644.8159569451.

The spelling of 268106491 in words is "two hundred sixty-eight million, one hundred six thousand, four hundred ninety-one".