620555760 has 360 divisors, whose sum is σ = 2431250640. Its totient is φ = 141250560.

The previous prime is 620555707. The next prime is 620555779. The reversal of 620555760 is 67555026.

620555760 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1480831 + ... + 1481249.

It is an arithmetic number, because the mean of its divisors is an integer number (6753474).

Almost surely, 2^620555760 is an apocalyptic number.

620555760 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 620555760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1215625320).

620555760 is an abundant number, since it is smaller than the sum of its proper divisors (1810694880).

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

620555760 is a wasteful number, since it uses less digits than its factorization.

620555760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 457 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 620555760 is about 24910.9566255493. The cubic root of 620555760 is about 852.9566058975.

The spelling of 620555760 in words is "six hundred twenty million, five hundred fifty-five thousand, seven hundred sixty".