166379649 has 8 divisors (see below), whose sum is σ = 222177792. Its totient is φ = 110750640.

The previous prime is 166379597. The next prime is 166379657. The reversal of 166379649 is 946973661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166379649 - 2²⁰ = 165331073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166379249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39969 + ... + 43934.

It is an arithmetic number, because the mean of its divisors is an integer number (27772224).

Almost surely, 2^166379649 is an apocalyptic number.

It is an amenable number.

166379649 is a deficient number, since it is larger than the sum of its proper divisors (55798143).

166379649 is an equidigital number, since it uses as much as digits as its factorization.

166379649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84567.

The product of its digits is 1469664, while the sum is 51.

The square root of 166379649 is about 12898.8235510065. The cubic root of 166379649 is about 550.0051228173.

The spelling of 166379649 in words is "one hundred sixty-six million, three hundred seventy-nine thousand, six hundred forty-nine".