263497090 has 16 divisors (see below), whose sum is σ = 474656760. Its totient is φ = 105318400.

The previous prime is 263497063. The next prime is 263497099. The reversal of 263497090 is 90794362.

263497090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 82029249 + 181467841 = 9057^2 + 13471^2 .

It is not an unprimeable number, because it can be changed into a prime (263497099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4740 + ... + 23440.

Almost surely, 2^263497090 is an apocalyptic number.

263497090 is a deficient number, since it is larger than the sum of its proper divisors (211159670).

263497090 is a wasteful number, since it uses less digits than its factorization.

263497090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20117.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 263497090 is about 16232.5934465199. The cubic root of 263497090 is about 641.0992583037.

The spelling of 263497090 in words is "two hundred sixty-three million, four hundred ninety-seven thousand, ninety".