620944938 has 48 divisors (see below), whose sum is σ = 1408942080. Its totient is φ = 197268192.

The previous prime is 620944903. The next prime is 620944981. The reversal of 620944938 is 839449026.

It is a junction number, because it is equal to n+sod(n) for n = 620944893 and 620944902.

It is an unprimeable number.

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, 118743 + ... + 123861.

It is an arithmetic number, because the mean of its divisors is an integer number (29352960).

Almost surely, 2^620944938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620944938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704471040).

620944938 is an abundant number, since it is smaller than the sum of its proper divisors (787997142).

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

620944938 is a wasteful number, since it uses less digits than its factorization.

620944938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5443 (or 5440 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 620944938 is about 24918.7667832901. The cubic root of 620944938 is about 853.1348775896.

The spelling of 620944938 in words is "six hundred twenty million, nine hundred forty-four thousand, nine hundred thirty-eight".