654044166 has 16 divisors (see below), whose sum is σ = 1453431600. Its totient is φ = 218014704.

The previous prime is 654044161. The next prime is 654044173. The reversal of 654044166 is 661440456.

It is a super-3 number, since 3×654044166³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 654044166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654044161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6055911 + ... + 6056018.

It is an arithmetic number, because the mean of its divisors is an integer number (90839475).

Almost surely, 2^654044166 is an apocalyptic number.

654044166 is an abundant number, since it is smaller than the sum of its proper divisors (799387434).

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

654044166 is a wasteful number, since it uses less digits than its factorization.

654044166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12111940 (or 12111934 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 654044166 is about 25574.2872041431. The cubic root of 654044166 is about 868.0319126848.

The spelling of 654044166 in words is "six hundred fifty-four million, forty-four thousand, one hundred sixty-six".