164320620 has 48 divisors (see below), whose sum is σ = 471326688. Its totient is φ = 42749440.

The previous prime is 164320613. The next prime is 164320621. The reversal of 164320620 is 26023461.

It is not an unprimeable number, because it can be changed into a prime (164320621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30939 + ... + 35858.

It is an arithmetic number, because the mean of its divisors is an integer number (9819306).

Almost surely, 2^164320620 is an apocalyptic number.

164320620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164320620 is an abundant number, since it is smaller than the sum of its proper divisors (307006068).

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

164320620 is a wasteful number, since it uses less digits than its factorization.

164320620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66850 (or 66848 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 164320620 is about 12818.7604704979. The cubic root of 164320620 is about 547.7268383033.

The spelling of 164320620 in words is "one hundred sixty-four million, three hundred twenty thousand, six hundred twenty".