620669952 has 220 divisors, whose sum is σ = 2120200720. Its totient is φ = 177168384.

The previous prime is 620669939. The next prime is 620669953. The reversal of 620669952 is 259966026.

It is a junction number, because it is equal to n+sod(n) for n = 620669898 and 620669907.

It is not an unprimeable number, because it can be changed into a prime (620669953) 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 19 ways as a sum of consecutive naturals, for example, 580074 + ... + 581142.

It is an arithmetic number, because the mean of its divisors is an integer number (9637276).

Almost surely, 2^620669952 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 620669952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060100360).

620669952 is an abundant number, since it is smaller than the sum of its proper divisors (1499530768).

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

620669952 is a wasteful number, since it uses less digits than its factorization.

620669952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 620669952 is about 24913.2485236269. The cubic root of 620669952 is about 853.0089218231.

The spelling of 620669952 in words is "six hundred twenty million, six hundred sixty-nine thousand, nine hundred fifty-two".