166417456 has 20 divisors (see below), whose sum is σ = 328519152. Its totient is φ = 81638336.

The previous prime is 166417423. The next prime is 166417463. The reversal of 166417456 is 654714661.

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 3 ways as a sum of consecutive naturals, for example, 97276 + ... + 98971.

Almost surely, 2^166417456 is an apocalyptic number.

166417456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166417456 is a deficient number, since it is larger than the sum of its proper divisors (162101696).

166417456 is a wasteful number, since it uses less digits than its factorization.

166417456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196308 (or 196302 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 166417456 is about 12900.2889890111. The cubic root of 166417456 is about 550.0467794922.

The spelling of 166417456 in words is "one hundred sixty-six million, four hundred seventeen thousand, four hundred fifty-six".