266341664 has 12 divisors (see below), whose sum is σ = 524360214. Its totient is φ = 133170816.

The previous prime is 266341657. The next prime is 266341697. The reversal of 266341664 is 466143662.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 240250000 + 26091664 = 15500^2 + 5108^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4161557 + ... + 4161620.

Almost surely, 2^266341664 is an apocalyptic number.

It is an amenable number.

266341664 is a deficient number, since it is larger than the sum of its proper divisors (258018550).

266341664 is an equidigital number, since it uses as much as digits as its factorization.

266341664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323187 (or 8323179 counting only the distinct ones).

The product of its digits is 124416, while the sum is 38.

The square root of 266341664 is about 16319.9774509648. The cubic root of 266341664 is about 643.3979945805.

The spelling of 266341664 in words is "two hundred sixty-six million, three hundred forty-one thousand, six hundred sixty-four".