166707137 has 4 divisors (see below), whose sum is σ = 166735536. Its totient is φ = 166678740.

The previous prime is 166707133. The next prime is 166707139. The reversal of 166707137 is 731707661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166707137 - 2² = 166707133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166707137.

It is not an unprimeable number, because it can be changed into a prime (166707131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1763 + ... + 18344.

It is an arithmetic number, because the mean of its divisors is an integer number (41683884).

Almost surely, 2^166707137 is an apocalyptic number.

It is an amenable number.

166707137 is a deficient number, since it is larger than the sum of its proper divisors (28399).

166707137 is an equidigital number, since it uses as much as digits as its factorization.

166707137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28398.

The product of its (nonzero) digits is 37044, while the sum is 38.

The square root of 166707137 is about 12911.5118014894. The cubic root of 166707137 is about 550.3657479097.

The spelling of 166707137 in words is "one hundred sixty-six million, seven hundred seven thousand, one hundred thirty-seven".