266412566 has 16 divisors (see below), whose sum is σ = 480744960. Its totient is φ = 108167400.

The previous prime is 266412557. The next prime is 266412577. The reversal of 266412566 is 665214662.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500510 + ... + 501041.

It is an arithmetic number, because the mean of its divisors is an integer number (30046560).

Almost surely, 2^266412566 is an apocalyptic number.

266412566 is a deficient number, since it is larger than the sum of its proper divisors (214332394).

266412566 is a wasteful number, since it uses less digits than its factorization.

266412566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001579.

The product of its digits is 103680, while the sum is 38.

The square root of 266412566 is about 16322.1495520657. The cubic root of 266412566 is about 643.4550818528.

The spelling of 266412566 in words is "two hundred sixty-six million, four hundred twelve thousand, five hundred sixty-six".