620545985280 has 576 divisors, whose sum is σ = 2375812494720. Its totient is φ = 152470093824.

The previous prime is 620545985273. The next prime is 620545985303. The reversal of 620545985280 is 82589545026.

620545985280 is a `hidden beast` number, since 6 + 2 + 0 + 545 + 98 + 5 + 2 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 358075294 + ... + 358077026.

It is an arithmetic number, because the mean of its divisors is an integer number (4124674470).

Almost surely, 2^620545985280 is an apocalyptic number.

620545985280 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 620545985280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1187906247360).

620545985280 is an abundant number, since it is smaller than the sum of its proper divisors (1755266509440).

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

620545985280 is a wasteful number, since it uses less digits than its factorization.

620545985280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573 (or 2553 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 54.

The spelling of 620545985280 in words is "six hundred twenty billion, five hundred forty-five million, nine hundred eighty-five thousand, two hundred eighty".