164640104 has 32 divisors (see below), whose sum is σ = 328173120. Its totient is φ = 77166336.

The previous prime is 164640097. The next prime is 164640127. The reversal of 164640104 is 401046461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33467 + ... + 38069.

It is an arithmetic number, because the mean of its divisors is an integer number (10255410).

Almost surely, 2^164640104 is an apocalyptic number.

It is an amenable number.

164640104 is a deficient number, since it is larger than the sum of its proper divisors (163533016).

164640104 is a wasteful number, since it uses less digits than its factorization.

164640104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4889 (or 4885 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 164640104 is about 12831.2159984937. The cubic root of 164640104 is about 548.0815851679.

Adding to 164640104 its reverse (401046461), we get a palindrome (565686565).

The spelling of 164640104 in words is "one hundred sixty-four million, six hundred forty thousand, one hundred four".