65166566 has 8 divisors (see below), whose sum is σ = 97784544. Its totient is φ = 32571720.

The previous prime is 65166553. The next prime is 65166571. The reversal of 65166566 is 66566156.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6371 + ... + 13073.

It is an arithmetic number, because the mean of its divisors is an integer number (12223068).

Almost surely, 2^65166566 is an apocalyptic number.

65166566 is a deficient number, since it is larger than the sum of its proper divisors (32617978).

65166566 is a wasteful number, since it uses less digits than its factorization.

65166566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11566.

The product of its digits is 194400, while the sum is 41.

The square root of 65166566 is about 8072.5811237794. The cubic root of 65166566 is about 402.4157271196.

The spelling of 65166566 in words is "sixty-five million, one hundred sixty-six thousand, five hundred sixty-six".