264861166 has 24 divisors (see below), whose sum is σ = 411891480. Its totient is φ = 127665552.

The previous prime is 264861161. The next prime is 264861203. The reversal of 264861166 is 661168462.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264861161) 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 in 11 ways as a sum of consecutive naturals, for example, 984480 + ... + 984748.

It is an arithmetic number, because the mean of its divisors is an integer number (17162145).

Almost surely, 2^264861166 is an apocalyptic number.

264861166 is a deficient number, since it is larger than the sum of its proper divisors (147030314).

264861166 is a wasteful number, since it uses less digits than its factorization.

264861166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 421 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 264861166 is about 16274.5557850284. Note that the first 3 decimals coincide. The cubic root of 264861166 is about 642.2036391036.

The spelling of 264861166 in words is "two hundred sixty-four million, eight hundred sixty-one thousand, one hundred sixty-six".