166716450 has 288 divisors, whose sum is σ = 529251840. Its totient is φ = 37324800.

The previous prime is 166716437. The next prime is 166716479. The reversal of 166716450 is 54617661.

166716450 is a `hidden beast` number, since 1 + 6 + 6 + 7 + 1 + 645 + 0 = 666.

166716450 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4505832 + ... + 4505868.

It is an arithmetic number, because the mean of its divisors is an integer number (1837680).

Almost surely, 2^166716450 is an apocalyptic number.

166716450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 166716450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264625920).

166716450 is an abundant number, since it is smaller than the sum of its proper divisors (362535390).

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

166716450 is a wasteful number, since it uses less digits than its factorization.

166716450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 166716450 is about 12911.8724436079. The cubic root of 166716450 is about 550.3759963427.

The spelling of 166716450 in words is "one hundred sixty-six million, seven hundred sixteen thousand, four hundred fifty".