166344077 has 2 divisors, whose sum is σ = 166344078. Its totient is φ = 166344076.

The previous prime is 166344067. The next prime is 166344089. The reversal of 166344077 is 770443661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152423716 + 13920361 = 12346^2 + 3731^2 .

It is a cyclic number.

It is not a de Polignac number, because 166344077 - 2¹⁸ = 166081933 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166344077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166344067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83172038 + 83172039.

It is an arithmetic number, because the mean of its divisors is an integer number (83172039).

Almost surely, 2^166344077 is an apocalyptic number.

It is an amenable number.

166344077 is a deficient number, since it is larger than the sum of its proper divisors (1).

166344077 is an equidigital number, since it uses as much as digits as its factorization.

166344077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 166344077 is about 12897.4445918562. Note that the first 3 decimals coincide. The cubic root of 166344077 is about 549.9659229576.

The spelling of 166344077 in words is "one hundred sixty-six million, three hundred forty-four thousand, seventy-seven".