164327640 has 64 divisors (see below), whose sum is σ = 514425600. Its totient is φ = 41914752.

The previous prime is 164327623. The next prime is 164327671. The reversal of 164327640 is 46723461.

It is a happy number.

164327640 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27010 + ... + 32529.

It is an arithmetic number, because the mean of its divisors is an integer number (8037900).

Almost surely, 2^164327640 is an apocalyptic number.

164327640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164327640 is an abundant number, since it is smaller than the sum of its proper divisors (350097960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164327640 is a wasteful number, since it uses less digits than its factorization.

164327640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59576 (or 59572 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 164327640 is about 12819.0342849998. The cubic root of 164327640 is about 547.7346380703.

The spelling of 164327640 in words is "one hundred sixty-four million, three hundred twenty-seven thousand, six hundred forty".