166963385 has 8 divisors (see below), whose sum is σ = 200528520. Its totient is φ = 133455744.

The previous prime is 166963343. The next prime is 166963399. The reversal of 166963385 is 583369661.

It can be written as a sum of positive squares in 4 ways, for example, as 346921 + 166616464 = 589^2 + 12908^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166963385 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7700 + ... + 19829.

It is an arithmetic number, because the mean of its divisors is an integer number (25066065).

Almost surely, 2^166963385 is an apocalyptic number.

It is an amenable number.

166963385 is a deficient number, since it is larger than the sum of its proper divisors (33565135).

166963385 is a wasteful number, since it uses less digits than its factorization.

166963385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28747.

The product of its digits is 699840, while the sum is 47.

The square root of 166963385 is about 12921.4312287765. The cubic root of 166963385 is about 550.6475953189.

The spelling of 166963385 in words is "one hundred sixty-six million, nine hundred sixty-three thousand, three hundred eighty-five".