164404620 has 96 divisors (see below), whose sum is σ = 541598400. Its totient is φ = 41260032.

The previous prime is 164404601. The next prime is 164404631. The reversal of 164404620 is 26404461.

164404620 is a `hidden beast` number, since 164 + 40 + 462 + 0 = 666.

164404620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×164404620³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226 + ... + 18134.

It is an arithmetic number, because the mean of its divisors is an integer number (5641650).

Almost surely, 2^164404620 is an apocalyptic number.

164404620 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 164404620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270799200).

164404620 is an abundant number, since it is smaller than the sum of its proper divisors (377193780).

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

164404620 is a wasteful number, since it uses less digits than its factorization.

164404620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17944 (or 17936 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 164404620 is about 12822.0364997141. The cubic root of 164404620 is about 547.8201542786.

The spelling of 164404620 in words is "one hundred sixty-four million, four hundred four thousand, six hundred twenty".