263798966 has 16 divisors (see below), whose sum is σ = 405311280. Its totient is φ = 128731680.

The previous prime is 263798947. The next prime is 263798981. The reversal of 263798966 is 669897362.

It is a pancake number, because a pancake can be divided into 263798966 parts by 22969 straight cuts.

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, 5576 + ... + 23636.

It is an arithmetic number, because the mean of its divisors is an integer number (25331955).

Almost surely, 2^263798966 is an apocalyptic number.

263798966 is a deficient number, since it is larger than the sum of its proper divisors (141512314).

263798966 is a wasteful number, since it uses less digits than its factorization.

263798966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18239.

The product of its digits is 5878656, while the sum is 56.

The square root of 263798966 is about 16241.8892374009. The cubic root of 263798966 is about 641.3439904431.

The spelling of 263798966 in words is "two hundred sixty-three million, seven hundred ninety-eight thousand, nine hundred sixty-six".