166535365 has 8 divisors (see below), whose sum is σ = 201821688. Its totient is φ = 131908800.

The previous prime is 166535353. The next prime is 166535377. The reversal of 166535365 is 563535661.

It is an interprime number because it is at equal distance from previous prime (166535353) and next prime (166535377).

It can be written as a sum of positive squares in 4 ways, for example, as 108805761 + 57729604 = 10431^2 + 7598^2 .

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

It is not a de Polignac number, because 166535365 - 2²¹ = 164438213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 164382 + ... + 165391.

It is an arithmetic number, because the mean of its divisors is an integer number (25227711).

Almost surely, 2^166535365 is an apocalyptic number.

It is an amenable number.

166535365 is a deficient number, since it is larger than the sum of its proper divisors (35286323).

166535365 is a wasteful number, since it uses less digits than its factorization.

166535365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329879.

The product of its digits is 243000, while the sum is 40.

The square root of 166535365 is about 12904.8581937191. The cubic root of 166535365 is about 550.1766539984.

The spelling of 166535365 in words is "one hundred sixty-six million, five hundred thirty-five thousand, three hundred sixty-five".