166747147 has 6 divisors (see below), whose sum is σ = 193971228. Its totient is φ = 142926084.

The previous prime is 166747127. The next prime is 166747201. The reversal of 166747147 is 741747661.

It is not a de Polignac number, because 166747147 - 2⁷ = 166747019 is a prime.

It is a super-2 number, since 2×166747147² = 55609222065279218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166747127) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1701453 + ... + 1701550.

It is an arithmetic number, because the mean of its divisors is an integer number (32328538).

Almost surely, 2^166747147 is an apocalyptic number.

166747147 is a deficient number, since it is larger than the sum of its proper divisors (27224081).

166747147 is an equidigital number, since it uses as much as digits as its factorization.

166747147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3403017 (or 3403010 counting only the distinct ones).

The product of its digits is 197568, while the sum is 43.

The square root of 166747147 is about 12913.0611010713. The cubic root of 166747147 is about 550.4097739636.

The spelling of 166747147 in words is "one hundred sixty-six million, seven hundred forty-seven thousand, one hundred forty-seven".