620752680 has 128 divisors (see below), whose sum is σ = 2136038400. Its totient is φ = 160185600.

The previous prime is 620752679. The next prime is 620752703. The reversal of 620752680 is 86257026.

620752680 is a `hidden beast` number, since 620 + 7 + 5 + 26 + 8 + 0 = 666.

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

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 31 ways as a sum of consecutive naturals, for example, 24210 + ... + 42750.

It is an arithmetic number, because the mean of its divisors is an integer number (16687800).

Almost surely, 2^620752680 is an apocalyptic number.

620752680 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 620752680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068019200).

620752680 is an abundant number, since it is smaller than the sum of its proper divisors (1515285720).

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

620752680 is a wasteful number, since it uses less digits than its factorization.

620752680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18592 (or 18582 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 620752680 is about 24914.9087897187. The cubic root of 620752680 is about 853.0468188228.

The spelling of 620752680 in words is "six hundred twenty million, seven hundred fifty-two thousand, six hundred eighty".