166605037 has 2 divisors, whose sum is σ = 166605038. Its totient is φ = 166605036.

The previous prime is 166605011. The next prime is 166605059. The reversal of 166605037 is 730506661.

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., 137217796 + 29387241 = 11714^2 + 5421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166605037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166604993 and 166605011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166605097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83302518 + 83302519.

It is an arithmetic number, because the mean of its divisors is an integer number (83302519).

Almost surely, 2^166605037 is an apocalyptic number.

It is an amenable number.

166605037 is a deficient number, since it is larger than the sum of its proper divisors (1).

166605037 is an equidigital number, since it uses as much as digits as its factorization.

166605037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 166605037 is about 12907.5573599345. The cubic root of 166605037 is about 550.2533675612.

The spelling of 166605037 in words is "one hundred sixty-six million, six hundred five thousand, thirty-seven".