620021322000 has 120 divisors (see below), whose sum is σ = 2165527866840. Its totient is φ = 165339014400.

The previous prime is 620021321993. The next prime is 620021322001. The reversal of 620021322000 is 223120026.

620021322000 is a `hidden beast` number, since 620 + 0 + 21 + 3 + 2 + 20 + 0 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35548839936 + 584472482064 = 188544^2 + 764508^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (620021322001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17204815 + ... + 17240814.

It is an arithmetic number, because the mean of its divisors is an integer number (18046065557).

Almost surely, 2^620021322000 is an apocalyptic number.

620021322000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620021322000 is an abundant number, since it is smaller than the sum of its proper divisors (1545506544840).

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

620021322000 is a wasteful number, since it uses less digits than its factorization.

620021322000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34445658 (or 34445639 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 620021322000 its reverse (223120026), we get a palindrome (620244442026).

The spelling of 620021322000 in words is "six hundred twenty billion, twenty-one million, three hundred twenty-two thousand".