166663408 has 10 divisors (see below), whose sum is σ = 322910384. Its totient is φ = 83331696.

The previous prime is 166663403. The next prime is 166663439. The reversal of 166663408 is 804366661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166663403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5208216 + ... + 5208247.

Almost surely, 2^166663408 is an apocalyptic number.

It is an amenable number.

166663408 is a deficient number, since it is larger than the sum of its proper divisors (156246976).

166663408 is a wasteful number, since it uses less digits than its factorization.

166663408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10416471 (or 10416465 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 166663408 is about 12909.8182791238. The cubic root of 166663408 is about 550.3176214990.

The spelling of 166663408 in words is "one hundred sixty-six million, six hundred sixty-three thousand, four hundred eight".