620666023560 has 128 divisors (see below), whose sum is σ = 2036238825600. Its totient is φ = 150096476160.

The previous prime is 620666023493. The next prime is 620666023597. The reversal of 620666023560 is 65320666026.

620666023560 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34939 + ... + 1114698.

It is an arithmetic number, because the mean of its divisors is an integer number (15908115825).

Almost surely, 2^620666023560 is an apocalyptic number.

620666023560 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 620666023560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018119412800).

620666023560 is an abundant number, since it is smaller than the sum of its proper divisors (1415572802040).

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

620666023560 is a wasteful number, since it uses less digits than its factorization.

620666023560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150071 (or 1150067 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 620666023560 its reverse (65320666026), we get a palindrome (685986689586).

The spelling of 620666023560 in words is "six hundred twenty billion, six hundred sixty-six million, twenty-three thousand, five hundred sixty".