166863744 has 48 divisors (see below), whose sum is σ = 480171120. Its totient is φ = 55620864.

The previous prime is 166863737. The next prime is 166863761. The reversal of 166863744 is 447368661.

It is a happy number.

166863744 is a `hidden beast` number, since 1 + 6 + 6 + 8 + 637 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×166863744³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166863744.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71272 + ... + 73575.

It is an arithmetic number, because the mean of its divisors is an integer number (10003565).

Almost surely, 2^166863744 is an apocalyptic number.

It is an amenable number.

166863744 is an abundant number, since it is smaller than the sum of its proper divisors (313307376).

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

166863744 is a wasteful number, since it uses less digits than its factorization.

166863744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144867 (or 144852 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 166863744 is about 12917.5750046206. The cubic root of 166863744 is about 550.5380343808.

The spelling of 166863744 in words is "one hundred sixty-six million, eight hundred sixty-three thousand, seven hundred forty-four".