164321216 has 14 divisors (see below), whose sum is σ = 326075040. Its totient is φ = 82160576.

The previous prime is 164321207. The next prime is 164321219. The reversal of 164321216 is 612123461.

164321216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164321219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1283696 + ... + 1283823.

Almost surely, 2^164321216 is an apocalyptic number.

164321216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

164321216 is a deficient number, since it is larger than the sum of its proper divisors (161753824).

164321216 is an equidigital number, since it uses as much as digits as its factorization.

164321216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567531 (or 2567521 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 164321216 is about 12818.7837176543. The cubic root of 164321216 is about 547.7275005144.

Adding to 164321216 its reverse (612123461), we get a palindrome (776444677).

The spelling of 164321216 in words is "one hundred sixty-four million, three hundred twenty-one thousand, two hundred sixteen".