268090691 has 8 divisors (see below), whose sum is σ = 305178624. Its totient is φ = 233122120.

The previous prime is 268090657. The next prime is 268090699. The reversal of 268090691 is 196090862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-268090691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268090699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529571 + ... + 530076.

It is an arithmetic number, because the mean of its divisors is an integer number (38147328).

Almost surely, 2^268090691 is an apocalyptic number.

268090691 is a deficient number, since it is larger than the sum of its proper divisors (37087933).

268090691 is a wasteful number, since it uses less digits than its factorization.

268090691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059681.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 268090691 is about 16373.4752267196. The cubic root of 268090691 is about 644.8032899730.

The spelling of 268090691 in words is "two hundred sixty-eight million, ninety thousand, six hundred ninety-one".