166839497 has 8 divisors (see below), whose sum is σ = 182932992. Its totient is φ = 150900400.

The previous prime is 166839487. The next prime is 166839499. The reversal of 166839497 is 794938661.

166839497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166839497 - 2⁴ = 166839481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166839499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36329 + ... + 40662.

It is an arithmetic number, because the mean of its divisors is an integer number (22866624).

Almost surely, 2^166839497 is an apocalyptic number.

It is an amenable number.

166839497 is a deficient number, since it is larger than the sum of its proper divisors (16093495).

166839497 is a wasteful number, since it uses less digits than its factorization.

166839497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77199.

The product of its digits is 1959552, while the sum is 53.

The square root of 166839497 is about 12916.6364429754. The cubic root of 166839497 is about 550.5113668296.

The spelling of 166839497 in words is "one hundred sixty-six million, eight hundred thirty-nine thousand, four hundred ninety-seven".