620222317440 has 512 divisors, whose sum is σ = 2208811991040. Its totient is φ = 146741207040.

The previous prime is 620222317433. The next prime is 620222317447. The reversal of 620222317440 is 44713222026.

It is an interprime number because it is at equal distance from previous prime (620222317433) and next prime (620222317447).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620222317447) 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 63 ways as a sum of consecutive naturals, for example, 483415039 + ... + 483416321.

It is an arithmetic number, because the mean of its divisors is an integer number (4314085920).

Almost surely, 2^620222317440 is an apocalyptic number.

620222317440 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 620222317440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104405995520).

620222317440 is an abundant number, since it is smaller than the sum of its proper divisors (1588589673600).

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

620222317440 is a wasteful number, since it uses less digits than its factorization.

620222317440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1850 (or 1838 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

Adding to 620222317440 its reverse (44713222026), we get a palindrome (664935539466).

The spelling of 620222317440 in words is "six hundred twenty billion, two hundred twenty-two million, three hundred seventeen thousand, four hundred forty".