265936066 has 48 divisors (see below), whose sum is σ = 467013312. Its totient is φ = 112608000.

The previous prime is 265936063. The next prime is 265936079. The reversal of 265936066 is 660639562.

It is a happy number.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (265936063) 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 23 ways as a sum of consecutive naturals, for example, 959920 + ... + 960196.

It is an arithmetic number, because the mean of its divisors is an integer number (9729444).

Almost surely, 2^265936066 is an apocalyptic number.

265936066 is a deficient number, since it is larger than the sum of its proper divisors (201077246).

265936066 is a wasteful number, since it uses less digits than its factorization.

265936066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 265936066 is about 16307.5462899849. The cubic root of 265936066 is about 643.0712294322.

The spelling of 265936066 in words is "two hundred sixty-five million, nine hundred thirty-six thousand, sixty-six".