164642306 has 16 divisors (see below), whose sum is σ = 254407608. Its totient is φ = 79862400.

The previous prime is 164642293. The next prime is 164642311. The reversal of 164642306 is 603246461.

It can be written as a sum of positive squares in 4 ways, for example, as 74563225 + 90079081 = 8635^2 + 9491^2 .

It is an unprimeable number.

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, 9296 + ... + 20388.

Almost surely, 2^164642306 is an apocalyptic number.

164642306 is a deficient number, since it is larger than the sum of its proper divisors (89765302).

164642306 is a wasteful number, since it uses less digits than its factorization.

164642306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11317.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 164642306 is about 12831.3018045715. The cubic root of 164642306 is about 548.0840286193.

Adding to 164642306 its reverse (603246461), we get a palindrome (767888767).

The spelling of 164642306 in words is "one hundred sixty-four million, six hundred forty-two thousand, three hundred six".