268978805 has 8 divisors (see below), whose sum is σ = 326860800. Its totient is φ = 212458896.

The previous prime is 268978783. The next prime is 268978849. The reversal of 268978805 is 508879862.

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 268978805 - 2¹⁰ = 268977781 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340085 + ... + 340874.

It is an arithmetic number, because the mean of its divisors is an integer number (40857600).

Almost surely, 2^268978805 is an apocalyptic number.

It is an amenable number.

268978805 is a deficient number, since it is larger than the sum of its proper divisors (57881995).

268978805 is an equidigital number, since it uses as much as digits as its factorization.

268978805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681043.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The square root of 268978805 is about 16400.5733131498. The cubic root of 268978805 is about 645.5145264482.

The spelling of 268978805 in words is "two hundred sixty-eight million, nine hundred seventy-eight thousand, eight hundred five".