164820620 has 24 divisors (see below), whose sum is σ = 346419024. Its totient is φ = 65871936.

The previous prime is 164820589. The next prime is 164820629. The reversal of 164820620 is 26028461.

It is not an unprimeable number, because it can be changed into a prime (164820629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26882 + ... + 32438.

It is an arithmetic number, because the mean of its divisors is an integer number (14434126).

Almost surely, 2^164820620 is an apocalyptic number.

164820620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164820620 is an abundant number, since it is smaller than the sum of its proper divisors (181598404).

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

164820620 is a wasteful number, since it uses less digits than its factorization.

164820620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7049 (or 7047 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 164820620 is about 12838.2483228827. The cubic root of 164820620 is about 548.2818226470.

The spelling of 164820620 in words is "one hundred sixty-four million, eight hundred twenty thousand, six hundred twenty".