266320466 has 4 divisors (see below), whose sum is σ = 399480702. Its totient is φ = 133160232.

The previous prime is 266320459. The next prime is 266320469. The reversal of 266320466 is 664023662.

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

It can be written as a sum of positive squares in only one way, i.e., 264745441 + 1575025 = 16271^2 + 1255^2 .

It is a super-2 number, since 2×266320466² = 141853181220914312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266320469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66580115 + ... + 66580118.

Almost surely, 2^266320466 is an apocalyptic number.

266320466 is a deficient number, since it is larger than the sum of its proper divisors (133160236).

266320466 is a wasteful number, since it uses less digits than its factorization.

266320466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133160235.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 266320466 is about 16319.3279886152. The cubic root of 266320466 is about 643.3809248860.

The spelling of 266320466 in words is "two hundred sixty-six million, three hundred twenty thousand, four hundred sixty-six".