164685472 has 72 divisors (see below), whose sum is σ = 380588544. Its totient is φ = 69939072.

The previous prime is 164685467. The next prime is 164685481. The reversal of 164685472 is 274586461.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198723 + ... + 199549.

It is an arithmetic number, because the mean of its divisors is an integer number (5285952).

Almost surely, 2^164685472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164685472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190294272).

164685472 is an abundant number, since it is smaller than the sum of its proper divisors (215903072).

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

164685472 is a wasteful number, since it uses less digits than its factorization.

164685472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 963 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 164685472 is about 12832.9837528145. The cubic root of 164685472 is about 548.1319234130.

The spelling of 164685472 in words is "one hundred sixty-four million, six hundred eighty-five thousand, four hundred seventy-two".