620915760 has 160 divisors (see below), whose sum is σ = 2147570880. Its totient is φ = 164892672.

The previous prime is 620915719. The next prime is 620915761. The reversal of 620915760 is 67519026.

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

It is not an unprimeable number, because it can be changed into a prime (620915761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 727494 + ... + 728346.

It is an arithmetic number, because the mean of its divisors is an integer number (13422318).

Almost surely, 2^620915760 is an apocalyptic number.

620915760 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 620915760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1073785440).

620915760 is an abundant number, since it is smaller than the sum of its proper divisors (1526655120).

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

620915760 is a wasteful number, since it uses less digits than its factorization.

620915760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 620915760 is about 24918.1813140526. The cubic root of 620915760 is about 853.1215145371.

The spelling of 620915760 in words is "six hundred twenty million, nine hundred fifteen thousand, seven hundred sixty".