65601166 has 8 divisors (see below), whose sum is σ = 98868744. Its totient is φ = 32644920.

The previous prime is 65601157. The next prime is 65601191. The reversal of 65601166 is 66110656.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77305 + ... + 78148.

It is an arithmetic number, because the mean of its divisors is an integer number (12358593).

Almost surely, 2^65601166 is an apocalyptic number.

65601166 is a deficient number, since it is larger than the sum of its proper divisors (33267578).

65601166 is a wasteful number, since it uses less digits than its factorization.

65601166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155666.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 65601166 is about 8099.4546730011. The cubic root of 65601166 is about 403.3083245352.

The spelling of 65601166 in words is "sixty-five million, six hundred one thousand, one hundred sixty-six".