166937 has 4 divisors (see below), whose sum is σ = 168756. Its totient is φ = 165120.

The previous prime is 166931. The next prime is 166949. The reversal of 166937 is 739661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 739661 = 13 ⋅56897.

It can be written as a sum of positive squares in 2 ways, for example, as 99856 + 67081 = 316^2 + 259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166937 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166937.

It is not an unprimeable number, because it can be changed into a prime (166931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764 + ... + 957.

It is an arithmetic number, because the mean of its divisors is an integer number (42189).

2¹⁶⁶⁹³⁷ is an apocalyptic number.

It is an amenable number.

166937 is a deficient number, since it is larger than the sum of its proper divisors (1819).

166937 is an equidigital number, since it uses as much as digits as its factorization.

166937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818.

The product of its digits is 6804, while the sum is 32.

The square root of 166937 is about 408.5792456795. The cubic root of 166937 is about 55.0618587757.

The spelling of 166937 in words is "one hundred sixty-six thousand, nine hundred thirty-seven".