166069433 has 4 divisors (see below), whose sum is σ = 167539188. Its totient is φ = 164599680.

The previous prime is 166069427. The next prime is 166069439. The reversal of 166069433 is 334960661.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (166069427) and next prime (166069439).

It can be written as a sum of positive squares in 2 ways, for example, as 66129424 + 99940009 = 8132^2 + 9997^2 .

It is a cyclic number.

It is not a de Polignac number, because 166069433 - 2¹⁸ = 165807289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166069439) 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 3 ways as a sum of consecutive naturals, for example, 734708 + ... + 734933.

It is an arithmetic number, because the mean of its divisors is an integer number (41884797).

Almost surely, 2^166069433 is an apocalyptic number.

It is an amenable number.

166069433 is a deficient number, since it is larger than the sum of its proper divisors (1469755).

166069433 is a wasteful number, since it uses less digits than its factorization.

166069433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469754.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 166069433 is about 12886.7929679963. The cubic root of 166069433 is about 549.6630807043.

The spelling of 166069433 in words is "one hundred sixty-six million, sixty-nine thousand, four hundred thirty-three".