263055946 has 4 divisors (see below), whose sum is σ = 394583922. Its totient is φ = 131527972.

The previous prime is 263055917. The next prime is 263055979. The reversal of 263055946 is 649550362.

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

It can be written as a sum of positive squares in only one way, i.e., 249987721 + 13068225 = 15811^2 + 3615^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 263055899 and 263055908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65763985 + ... + 65763988.

Almost surely, 2^263055946 is an apocalyptic number.

263055946 is a deficient number, since it is larger than the sum of its proper divisors (131527976).

263055946 is a wasteful number, since it uses less digits than its factorization.

263055946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131527975.

The product of its (nonzero) digits is 194400, while the sum is 40.

The square root of 263055946 is about 16218.9995375794. Note that the first 3 decimals coincide. The cubic root of 263055946 is about 640.7412846249.

The spelling of 263055946 in words is "two hundred sixty-three million, fifty-five thousand, nine hundred forty-six".