164442064 has 20 divisors (see below), whose sum is σ = 329593860. Its totient is φ = 79385600.

The previous prime is 164442041. The next prime is 164442067. The reversal of 164442064 is 460244461.

It can be written as a sum of positive squares in 2 ways, for example, as 31270464 + 133171600 = 5592^2 + 11540^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164442067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176737 + ... + 177664.

It is an arithmetic number, because the mean of its divisors is an integer number (16479693).

Almost surely, 2^164442064 is an apocalyptic number.

It is an amenable number.

164442064 is an abundant number, since it is smaller than the sum of its proper divisors (165151796).

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

164442064 is a wasteful number, since it uses less digits than its factorization.

164442064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354438 (or 354432 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 164442064 is about 12823.4965590513. The cubic root of 164442064 is about 547.8617407433.

The spelling of 164442064 in words is "one hundred sixty-four million, four hundred forty-two thousand, sixty-four".