266461403 has 4 divisors (see below), whose sum is σ = 286958448. Its totient is φ = 245964360.

The previous prime is 266461387. The next prime is 266461427. The reversal of 266461403 is 304164662.

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

It is a cyclic number.

It is not a de Polignac number, because 266461403 - 2⁴ = 266461387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 266461403.

It is not an unprimeable number, because it can be changed into a prime (266461303) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 10248503 + ... + 10248528.

It is an arithmetic number, because the mean of its divisors is an integer number (71739612).

Almost surely, 2^266461403 is an apocalyptic number.

266461403 is a deficient number, since it is larger than the sum of its proper divisors (20497045).

266461403 is a wasteful number, since it uses less digits than its factorization.

266461403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20497044.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 266461403 is about 16323.6455180820. The cubic root of 266461403 is about 643.4943974355.

The spelling of 266461403 in words is "two hundred sixty-six million, four hundred sixty-one thousand, four hundred three".