166396071 has 8 divisors (see below), whose sum is σ = 223144560. Its totient is φ = 110289152.

The previous prime is 166396063. The next prime is 166396079. The reversal of 166396071 is 170693661.

It is an interprime number because it is at equal distance from previous prime (166396063) and next prime (166396079).

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 166396071 - 2³ = 166396063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166396079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159786 + ... + 160823.

It is an arithmetic number, because the mean of its divisors is an integer number (27893070).

Almost surely, 2^166396071 is an apocalyptic number.

166396071 is a deficient number, since it is larger than the sum of its proper divisors (56748489).

166396071 is a wasteful number, since it uses less digits than its factorization.

166396071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320785.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 166396071 is about 12899.4601049811. The cubic root of 166396071 is about 550.0232177527.

The spelling of 166396071 in words is "one hundred sixty-six million, three hundred ninety-six thousand, seventy-one".