266330963 has 4 divisors (see below), whose sum is σ = 270306120. Its totient is φ = 262355808.

The previous prime is 266330947. The next prime is 266330969. The reversal of 266330963 is 369033662.

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 266330963 - 2⁴ = 266330947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266330969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1987478 + ... + 1987611.

It is an arithmetic number, because the mean of its divisors is an integer number (67576530).

Almost surely, 2^266330963 is an apocalyptic number.

266330963 is a deficient number, since it is larger than the sum of its proper divisors (3975157).

266330963 is an equidigital number, since it uses as much as digits as its factorization.

266330963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3975156.

The product of its (nonzero) digits is 104976, while the sum is 38.

The square root of 266330963 is about 16319.6495979540. The cubic root of 266330963 is about 643.3893777109.

The spelling of 266330963 in words is "two hundred sixty-six million, three hundred thirty thousand, nine hundred sixty-three".