166106537 has 2 divisors, whose sum is σ = 166106538. Its totient is φ = 166106536.

The previous prime is 166106533. The next prime is 166106557. The reversal of 166106537 is 735601661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124902976 + 41203561 = 11176^2 + 6419^2 .

It is an emirp because it is prime and its reverse (735601661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166106537 - 2² = 166106533 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 166106497 and 166106506.

It is not a weakly prime, because it can be changed into another prime (166106533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83053268 + 83053269.

It is an arithmetic number, because the mean of its divisors is an integer number (83053269).

Almost surely, 2^166106537 is an apocalyptic number.

It is an amenable number.

166106537 is a deficient number, since it is larger than the sum of its proper divisors (1).

166106537 is an equidigital number, since it uses as much as digits as its factorization.

166106537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 166106537 is about 12888.2325010065. The cubic root of 166106537 is about 549.7040137443.

The spelling of 166106537 in words is "one hundred sixty-six million, one hundred six thousand, five hundred thirty-seven".