166447073 has 16 divisors (see below), whose sum is σ = 182198016. Its totient is φ = 151139520.

The previous prime is 166447031. The next prime is 166447093. The reversal of 166447073 is 370744661.

It is a cyclic number.

It is not a de Polignac number, because 166447073 - 2⁸ = 166446817 is a prime.

It is a super-2 number, since 2×166447073² = 55409256220534658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166447013) 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 15 ways as a sum of consecutive naturals, for example, 263468 + ... + 264098.

It is an arithmetic number, because the mean of its divisors is an integer number (11387376).

Almost surely, 2^166447073 is an apocalyptic number.

166447073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166447073 is a deficient number, since it is larger than the sum of its proper divisors (15750943).

166447073 is a wasteful number, since it uses less digits than its factorization.

166447073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 166447073 is about 12901.4368579628. The cubic root of 166447073 is about 550.0794078185.

The spelling of 166447073 in words is "one hundred sixty-six million, four hundred forty-seven thousand, seventy-three".