166612065 has 16 divisors (see below), whose sum is σ = 266849856. Its totient is φ = 88769600.

The previous prime is 166612063. The next prime is 166612067. The reversal of 166612065 is 560216661.

166612065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166612063) and next prime (166612067).

It is not a de Polignac number, because 166612065 - 2¹ = 166612063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166612063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11275 + ... + 21455.

It is an arithmetic number, because the mean of its divisors is an integer number (16678116).

Almost surely, 2^166612065 is an apocalyptic number.

166612065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166612065 is a deficient number, since it is larger than the sum of its proper divisors (100237791).

166612065 is a wasteful number, since it uses less digits than its factorization.

166612065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11280.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 166612065 is about 12907.8296006726. The cubic root of 166612065 is about 550.2611046748.

It can be divided in two parts, 1666 and 12065, that added together give a palindrome (13731).

The spelling of 166612065 in words is "one hundred sixty-six million, six hundred twelve thousand, sixty-five".