166883656 has 8 divisors (see below), whose sum is σ = 312906870. Its totient is φ = 83441824.

The previous prime is 166883641. The next prime is 166883657. The reversal of 166883656 is 656388661.

It can be written as a sum of positive squares in only one way, i.e., 100200100 + 66683556 = 10010^2 + 8166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (166883657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10430221 + ... + 10430236.

Almost surely, 2^166883656 is an apocalyptic number.

It is an amenable number.

166883656 is a deficient number, since it is larger than the sum of its proper divisors (146023214).

166883656 is a wasteful number, since it uses less digits than its factorization.

166883656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20860463 (or 20860459 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 166883656 is about 12918.3457145255. The cubic root of 166883656 is about 550.5599322420.

The spelling of 166883656 in words is "one hundred sixty-six million, eight hundred eighty-three thousand, six hundred fifty-six".