621062020 has 48 divisors (see below), whose sum is σ = 1418301360. Its totient is φ = 227487744.

The previous prime is 621062009. The next prime is 621062023. The reversal of 621062020 is 20260126.

It can be written as a sum of positive squares in 8 ways, for example, as 9884736 + 611177284 = 3144^2 + 24722^2 .

It is not an unprimeable number, because it can be changed into a prime (621062023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12105 + ... + 37264.

It is an arithmetic number, because the mean of its divisors is an integer number (29547945).

Almost surely, 2^621062020 is an apocalyptic number.

It is an amenable number.

621062020 is an abundant number, since it is smaller than the sum of its proper divisors (797239340).

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

621062020 is a wasteful number, since it uses less digits than its factorization.

621062020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49432 (or 49430 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 621062020 is about 24921.1159461209. The cubic root of 621062020 is about 853.1884950438.

The spelling of 621062020 in words is "six hundred twenty-one million, sixty-two thousand, twenty".