268651 has 4 divisors (see below), whose sum is σ = 284472. Its totient is φ = 252832.

The previous prime is 268643. The next prime is 268661. The reversal of 268651 is 156862.

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 268651 - 2³ = 268643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268661) 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, 7885 + ... + 7918.

It is an arithmetic number, because the mean of its divisors is an integer number (71118).

2²⁶⁸⁶⁵¹ is an apocalyptic number.

268651 is a deficient number, since it is larger than the sum of its proper divisors (15821).

268651 is a wasteful number, since it uses less digits than its factorization.

268651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15820.

The product of its digits is 2880, while the sum is 28.

The square root of 268651 is about 518.3155409594. The cubic root of 268651 is about 64.5252189907.

It can be divided in two parts, 268 and 651, that added together give a palindrome (919).

The spelling of 268651 in words is "two hundred sixty-eight thousand, six hundred fifty-one".