620328720 has 320 divisors, whose sum is σ = 2249856000. Its totient is φ = 139806720.

The previous prime is 620328713. The next prime is 620328721. The reversal of 620328720 is 27823026.

620328720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (620328721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4163206 + ... + 4163354.

It is an arithmetic number, because the mean of its divisors is an integer number (7030800).

Almost surely, 2^620328720 is an apocalyptic number.

620328720 is a gapful number since it is divisible by the number (60) 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 620328720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124928000).

620328720 is an abundant number, since it is smaller than the sum of its proper divisors (1629527280).

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

620328720 is a wasteful number, since it uses less digits than its factorization.

620328720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 620328720 is about 24906.3991777214. The cubic root of 620328720 is about 852.8525707179.

The spelling of 620328720 in words is "six hundred twenty million, three hundred twenty-eight thousand, seven hundred twenty".