266628995 has 16 divisors (see below), whose sum is σ = 351440640. Its totient is φ = 193289184.

The previous prime is 266628953. The next prime is 266628997. The reversal of 266628995 is 599826662.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 266628995 - 2⁶ = 266628931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266628997) 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 15 ways as a sum of consecutive naturals, for example, 58829 + ... + 63198.

It is an arithmetic number, because the mean of its divisors is an integer number (21965040).

Almost surely, 2^266628995 is an apocalyptic number.

266628995 is a deficient number, since it is larger than the sum of its proper divisors (84811645).

266628995 is a wasteful number, since it uses less digits than its factorization.

266628995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122074.

The product of its digits is 2799360, while the sum is 53.

The square root of 266628995 is about 16328.7781233012. The cubic root of 266628995 is about 643.6292786478.

The spelling of 266628995 in words is "two hundred sixty-six million, six hundred twenty-eight thousand, nine hundred ninety-five".