265216066 has 16 divisors (see below), whose sum is σ = 401163840. Its totient is φ = 131499280.

The previous prime is 265216057. The next prime is 265216069. The reversal of 265216066 is 660612562.

265216066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (265216069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164235 + ... + 165841.

It is an arithmetic number, because the mean of its divisors is an integer number (25072740).

Almost surely, 2^265216066 is an apocalyptic number.

265216066 is a deficient number, since it is larger than the sum of its proper divisors (135947774).

265216066 is a wasteful number, since it uses less digits than its factorization.

265216066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2249.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 265216066 is about 16285.4556583474. The cubic root of 265216066 is about 642.4903507562.

The spelling of 265216066 in words is "two hundred sixty-five million, two hundred sixteen thousand, sixty-six".