268618399 has 8 divisors (see below), whose sum is σ = 307149440. Its totient is φ = 230126616.

The previous prime is 268618397. The next prime is 268618421. The reversal of 268618399 is 993816862.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 268618399 - 2¹ = 268618397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268618391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6712 + ... + 24130.

It is an arithmetic number, because the mean of its divisors is an integer number (38393680).

Almost surely, 2^268618399 is an apocalyptic number.

268618399 is a deficient number, since it is larger than the sum of its proper divisors (38531041).

268618399 is a wasteful number, since it uses less digits than its factorization.

268618399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19629.

The product of its digits is 1119744, while the sum is 52.

The square root of 268618399 is about 16389.5820263971. The cubic root of 268618399 is about 645.2260882392.

The spelling of 268618399 in words is "two hundred sixty-eight million, six hundred eighteen thousand, three hundred ninety-nine".