263479474 has 4 divisors (see below), whose sum is σ = 395219214. Its totient is φ = 131739736.

The previous prime is 263479453. The next prime is 263479477. The reversal of 263479474 is 474974362.

263479474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 474974362 = 2 ⋅237487181.

It can be written as a sum of positive squares in only one way, i.e., 190633249 + 72846225 = 13807^2 + 8535^2 .

It is not an unprimeable number, because it can be changed into a prime (263479477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65869867 + ... + 65869870.

Almost surely, 2^263479474 is an apocalyptic number.

263479474 is a deficient number, since it is larger than the sum of its proper divisors (131739740).

263479474 is a wasteful number, since it uses less digits than its factorization.

263479474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131739739.

The product of its digits is 1016064, while the sum is 46.

The square root of 263479474 is about 16232.0508254502. The cubic root of 263479474 is about 641.0849711678.

The spelling of 263479474 in words is "two hundred sixty-three million, four hundred seventy-nine thousand, four hundred seventy-four".