166442722 has 16 divisors (see below), whose sum is σ = 253380960. Its totient is φ = 81988192.

The previous prime is 166442719. The next prime is 166442729. The reversal of 166442722 is 227244661.

It is not an unprimeable number, because it can be changed into a prime (166442729) 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 7 ways as a sum of consecutive naturals, for example, 68358 + ... + 70750.

It is an arithmetic number, because the mean of its divisors is an integer number (15836310).

Almost surely, 2^166442722 is an apocalyptic number.

166442722 is a deficient number, since it is larger than the sum of its proper divisors (86938238).

166442722 is a wasteful number, since it uses less digits than its factorization.

166442722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897.

The product of its digits is 32256, while the sum is 34.

The square root of 166442722 is about 12901.2682322321. The cubic root of 166442722 is about 550.0746146705.

The spelling of 166442722 in words is "one hundred sixty-six million, four hundred forty-two thousand, seven hundred twenty-two".