268641398 has 4 divisors (see below), whose sum is σ = 402962100. Its totient is φ = 134320698.

The previous prime is 268641379. The next prime is 268641419. The reversal of 268641398 is 893146862.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67160348 + ... + 67160351.

It is an arithmetic number, because the mean of its divisors is an integer number (100740525).

Almost surely, 2^268641398 is an apocalyptic number.

268641398 is a deficient number, since it is larger than the sum of its proper divisors (134320702).

268641398 is a wasteful number, since it uses less digits than its factorization.

268641398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134320701.

The product of its digits is 497664, while the sum is 47.

The square root of 268641398 is about 16390.2836461118. The cubic root of 268641398 is about 645.2445023803.

The spelling of 268641398 in words is "two hundred sixty-eight million, six hundred forty-one thousand, three hundred ninety-eight".