166203071 has 8 divisors (see below), whose sum is σ = 169616160. Its totient is φ = 162800352.

The previous prime is 166203049. The next prime is 166203073. The reversal of 166203071 is 170302661.

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 166203071 - 2⁶ = 166203007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166203071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166203073) 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, 35366 + ... + 39788.

It is an arithmetic number, because the mean of its divisors is an integer number (21202020).

Almost surely, 2^166203071 is an apocalyptic number.

166203071 is a deficient number, since it is larger than the sum of its proper divisors (3413089).

166203071 is an equidigital number, since it uses as much as digits as its factorization.

166203071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5185.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 166203071 is about 12891.9770012206. The cubic root of 166203071 is about 549.8104812597.

It can be divided in two parts, 16620 and 3071, that added together give a palindrome (19691).

The spelling of 166203071 in words is "one hundred sixty-six million, two hundred three thousand, seventy-one".