620710780 has 48 divisors (see below), whose sum is σ = 1368652320. Its totient is φ = 236130048.

The previous prime is 620710759. The next prime is 620710793. The reversal of 620710780 is 87017026.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30874 + ... + 46846.

It is an arithmetic number, because the mean of its divisors is an integer number (28513590).

Almost surely, 2^620710780 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 620710780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684326160).

620710780 is an abundant number, since it is smaller than the sum of its proper divisors (747941540).

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

620710780 is a wasteful number, since it uses less digits than its factorization.

620710780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16078 (or 16076 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 620710780 is about 24914.0679135303. The cubic root of 620710780 is about 853.0276252067.

The spelling of 620710780 in words is "six hundred twenty million, seven hundred ten thousand, seven hundred eighty".