268961805 has 48 divisors (see below), whose sum is σ = 551191680. Its totient is φ = 118710144.

The previous prime is 268961801. The next prime is 268961813. The reversal of 268961805 is 508169862.

268961805 is a `hidden beast` number, since 26 + 8 + 9 + 618 + 0 + 5 = 666.

It is not a de Polignac number, because 268961805 - 2² = 268961801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268961801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5587 + ... + 23856.

It is an arithmetic number, because the mean of its divisors is an integer number (11483160).

Almost surely, 2^268961805 is an apocalyptic number.

It is an amenable number.

268961805 is an abundant number, since it is smaller than the sum of its proper divisors (282229875).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268961805 is a wasteful number, since it uses less digits than its factorization.

268961805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29490 (or 29487 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 268961805 is about 16400.0550303955. The cubic root of 268961805 is about 645.5009268907.

The spelling of 268961805 in words is "two hundred sixty-eight million, nine hundred sixty-one thousand, eight hundred five".