166605283 has 8 divisors (see below), whose sum is σ = 179550000. Its totient is φ = 153679008.

The previous prime is 166605259. The next prime is 166605337. The reversal of 166605283 is 382506661.

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 166605283 - 2¹³ = 166597091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166605683) 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, 18468 + ... + 25966.

It is an arithmetic number, because the mean of its divisors is an integer number (22443750).

Almost surely, 2^166605283 is an apocalyptic number.

166605283 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

166605283 is a deficient number, since it is larger than the sum of its proper divisors (12944717).

166605283 is a wasteful number, since it uses less digits than its factorization.

166605283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9221.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 166605283 is about 12907.5668892321. The cubic root of 166605283 is about 550.2536383859.

The spelling of 166605283 in words is "one hundred sixty-six million, six hundred five thousand, two hundred eighty-three".