166165417 has 8 divisors (see below), whose sum is σ = 184344480. Its totient is φ = 148498560.

The previous prime is 166165411. The next prime is 166165423. The reversal of 166165417 is 714561661.

It is an interprime number because it is at equal distance from previous prime (166165411) and next prime (166165423).

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

It is a cyclic number.

It is not a de Polignac number, because 166165417 - 2¹¹ = 166163369 is a prime.

It is a super-2 number, since 2×166165417² = 55221891613567778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166165411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127368 + ... + 128665.

It is an arithmetic number, because the mean of its divisors is an integer number (23043060).

Almost surely, 2^166165417 is an apocalyptic number.

It is an amenable number.

166165417 is a deficient number, since it is larger than the sum of its proper divisors (18179063).

166165417 is a wasteful number, since it uses less digits than its factorization.

166165417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256103.

The product of its digits is 30240, while the sum is 37.

The square root of 166165417 is about 12890.5165528772. The cubic root of 166165417 is about 549.7689575033.

The spelling of 166165417 in words is "one hundred sixty-six million, one hundred sixty-five thousand, four hundred seventeen".