166716337 has 2 divisors, whose sum is σ = 166716338. Its totient is φ = 166716336.

The previous prime is 166716311. The next prime is 166716343. The reversal of 166716337 is 733617661.

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., 102090816 + 64625521 = 10104^2 + 8039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166716337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166716337.

It is not a weakly prime, because it can be changed into another prime (166716437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83358168 + 83358169.

It is an arithmetic number, because the mean of its divisors is an integer number (83358169).

Almost surely, 2^166716337 is an apocalyptic number.

It is an amenable number.

166716337 is a deficient number, since it is larger than the sum of its proper divisors (1).

166716337 is an equidigital number, since it uses as much as digits as its factorization.

166716337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 40.

The square root of 166716337 is about 12911.8680677894. The cubic root of 166716337 is about 550.3758719948.

The spelling of 166716337 in words is "one hundred sixty-six million, seven hundred sixteen thousand, three hundred thirty-seven".