268745387 has 4 divisors (see below), whose sum is σ = 271516056. Its totient is φ = 265974720.

The previous prime is 268745371. The next prime is 268745419. The reversal of 268745387 is 783547862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783547862 = 2 ⋅391773931.

It is a cyclic number.

It is not a de Polignac number, because 268745387 - 2⁴ = 268745371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268745357) 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, 1385189 + ... + 1385382.

It is an arithmetic number, because the mean of its divisors is an integer number (67879014).

Almost surely, 2^268745387 is an apocalyptic number.

268745387 is a deficient number, since it is larger than the sum of its proper divisors (2770669).

268745387 is an equidigital number, since it uses as much as digits as its factorization.

268745387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770668.

The product of its digits is 2257920, while the sum is 50.

The square root of 268745387 is about 16393.4556149703. The cubic root of 268745387 is about 645.3277480195.

The spelling of 268745387 in words is "two hundred sixty-eight million, seven hundred forty-five thousand, three hundred eighty-seven".