164593620 has 192 divisors, whose sum is σ = 535610880. Its totient is φ = 42456960.

The previous prime is 164593603. The next prime is 164593631. The reversal of 164593620 is 26395461.

It is a happy number.

164593620 is a `hidden beast` number, since 1 + 6 + 4 + 593 + 62 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2318185 + ... + 2318255.

It is an arithmetic number, because the mean of its divisors is an integer number (2789640).

Almost surely, 2^164593620 is an apocalyptic number.

164593620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164593620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267805440).

164593620 is an abundant number, since it is smaller than the sum of its proper divisors (371017260).

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

164593620 is an equidigital number, since it uses as much as digits as its factorization.

164593620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 164593620 is about 12829.4045068351. The cubic root of 164593620 is about 548.0299990681.

The spelling of 164593620 in words is "one hundred sixty-four million, five hundred ninety-three thousand, six hundred twenty".