268090217 has 4 divisors (see below), whose sum is σ = 269797956. Its totient is φ = 266382480.

The previous prime is 268090211. The next prime is 268090241. The reversal of 268090217 is 712090862.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 138039001 + 130051216 = 11749^2 + 11404^2 .

It is a cyclic number.

It is not a de Polignac number, because 268090217 - 2⁸ = 268089961 is a prime.

It is a super-3 number, since 3×268090217³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268090211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853634 + ... + 853947.

It is an arithmetic number, because the mean of its divisors is an integer number (67449489).

Almost surely, 2^268090217 is an apocalyptic number.

It is an amenable number.

268090217 is a deficient number, since it is larger than the sum of its proper divisors (1707739).

268090217 is a wasteful number, since it uses less digits than its factorization.

268090217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707738.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 268090217 is about 16373.4607520829. The cubic root of 268090217 is about 644.8029099562.

The spelling of 268090217 in words is "two hundred sixty-eight million, ninety thousand, two hundred seventeen".