266299966 has 8 divisors (see below), whose sum is σ = 400153680. Its totient is φ = 132915408.

The previous prime is 266299963. The next prime is 266299967. The reversal of 266299966 is 669992662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266299963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115866 + ... + 118141.

It is an arithmetic number, because the mean of its divisors is an integer number (50019210).

Almost surely, 2^266299966 is an apocalyptic number.

266299966 is a deficient number, since it is larger than the sum of its proper divisors (133853714).

266299966 is a wasteful number, since it uses less digits than its factorization.

266299966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234578.

The product of its digits is 3779136, while the sum is 55.

The square root of 266299966 is about 16318.6998869395. The cubic root of 266299966 is about 643.3644163946.

The spelling of 266299966 in words is "two hundred sixty-six million, two hundred ninety-nine thousand, nine hundred sixty-six".