166560437 has 2 divisors, whose sum is σ = 166560438. Its totient is φ = 166560436.

The previous prime is 166560367. The next prime is 166560451. The reversal of 166560437 is 734065661.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159112996 + 7447441 = 12614^2 + 2729^2 .

It is a cyclic number.

It is not a de Polignac number, because 166560437 - 2¹⁶ = 166494901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166560437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166560467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83280218 + 83280219.

It is an arithmetic number, because the mean of its divisors is an integer number (83280219).

Almost surely, 2^166560437 is an apocalyptic number.

It is an amenable number.

166560437 is a deficient number, since it is larger than the sum of its proper divisors (1).

166560437 is an equidigital number, since it uses as much as digits as its factorization.

166560437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 166560437 is about 12905.8295742660. The cubic root of 166560437 is about 550.2042624224.

The spelling of 166560437 in words is "one hundred sixty-six million, five hundred sixty thousand, four hundred thirty-seven".