65166166 has 8 divisors (see below), whose sum is σ = 105268464. Its totient is φ = 30076680.

The previous prime is 65166163. The next prime is 65166173. The reversal of 65166166 is 66166156.

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

It is a super-2 number, since 2×65166166² = 8493258382279112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65166163) 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, 1253170 + ... + 1253221.

It is an arithmetic number, because the mean of its divisors is an integer number (13158558).

Almost surely, 2^65166166 is an apocalyptic number.

65166166 is a deficient number, since it is larger than the sum of its proper divisors (40102298).

65166166 is a wasteful number, since it uses less digits than its factorization.

65166166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506406.

The product of its digits is 38880, while the sum is 37.

The square root of 65166166 is about 8072.5563485181. The cubic root of 65166166 is about 402.4149037597.

The spelling of 65166166 in words is "sixty-five million, one hundred sixty-six thousand, one hundred sixty-six".