268860491 has 4 divisors (see below), whose sum is σ = 284675832. Its totient is φ = 253045152.

The previous prime is 268860461. The next prime is 268860497. The reversal of 268860491 is 194068862.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268860491 is a prime.

It is a super-2 number, since 2×268860491² = 144571927241522162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268860497) 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, 7907645 + ... + 7907678.

It is an arithmetic number, because the mean of its divisors is an integer number (71168958).

Almost surely, 2^268860491 is an apocalyptic number.

268860491 is a deficient number, since it is larger than the sum of its proper divisors (15815341).

268860491 is a wasteful number, since it uses less digits than its factorization.

268860491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15815340.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 268860491 is about 16396.9659083624. The cubic root of 268860491 is about 645.4198664415.

The spelling of 268860491 in words is "two hundred sixty-eight million, eight hundred sixty thousand, four hundred ninety-one".