266263090 has 16 divisors (see below), whose sum is σ = 480452760. Its totient is φ = 106243200.

The previous prime is 266263079. The next prime is 266263091. The reversal of 266263090 is 90362662.

It can be written as a sum of positive squares in 4 ways, for example, as 266048721 + 214369 = 16311^2 + 463^2 .

It is not an unprimeable number, because it can be changed into a prime (266263091) 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, 28461 + ... + 36640.

Almost surely, 2^266263090 is an apocalyptic number.

266263090 is a deficient number, since it is larger than the sum of its proper divisors (214189670).

266263090 is a wasteful number, since it uses less digits than its factorization.

266263090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65517.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 266263090 is about 16317.5699784006. The cubic root of 266263090 is about 643.3347183041.

The spelling of 266263090 in words is "two hundred sixty-six million, two hundred sixty-three thousand, ninety".