166666448 has 30 divisors (see below), whose sum is σ = 349672374. Its totient is φ = 76921728.

The previous prime is 166666417. The next prime is 166666469. The reversal of 166666448 is 844666661.

It can be written as a sum of positive squares in 3 ways, for example, as 5071504 + 161594944 = 2252^2 + 12712^2 .

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 28115 + ... + 33522.

Almost surely, 2^166666448 is an apocalyptic number.

It is an amenable number.

166666448 is an abundant number, since it is smaller than the sum of its proper divisors (183005926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166666448 is a wasteful number, since it uses less digits than its factorization.

166666448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61671 (or 61652 counting only the distinct ones).

The product of its digits is 995328, while the sum is 47.

The square root of 166666448 is about 12909.9360184317. The cubic root of 166666448 is about 550.3209674752.

The spelling of 166666448 in words is "one hundred sixty-six million, six hundred sixty-six thousand, four hundred forty-eight".