620730430164 has 120 divisors (see below), whose sum is σ = 1747957660680. Its totient is φ = 190947891456.

The previous prime is 620730430147. The next prime is 620730430169. The reversal of 620730430164 is 461034037026.

It is a happy number.

620730430164 is a `hidden beast` number, since 6 + 207 + 3 + 0 + 430 + 16 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 53133938064 + 567596492100 = 230508^2 + 753390^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620730430169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20155882 + ... + 20186654.

It is an arithmetic number, because the mean of its divisors is an integer number (14566313839).

Almost surely, 2^620730430164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620730430164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (873978830340).

620730430164 is an abundant number, since it is smaller than the sum of its proper divisors (1127227230516).

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

620730430164 is a wasteful number, since it uses less digits than its factorization.

620730430164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35591 (or 35580 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 620730430164 in words is "six hundred twenty billion, seven hundred thirty million, four hundred thirty thousand, one hundred sixty-four".