2598785820 has 144 divisors (see below), whose sum is σ = 8104719168. Its totient is φ = 673643520.

The previous prime is 2598785789. The next prime is 2598785837. The reversal of 2598785820 is 285878952.

2598785820 is a `hidden beast` number, since 2 + 59 + 8 + 7 + 8 + 582 + 0 = 666.

2598785820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2929417 + ... + 2930303.

It is an arithmetic number, because the mean of its divisors is an integer number (56282772).

Almost surely, 2^2598785820 is an apocalyptic number.

2598785820 is a gapful number since it is divisible by the number (20) 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 2598785820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4052359584).

2598785820 is an abundant number, since it is smaller than the sum of its proper divisors (5505933348).

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

2598785820 is a wasteful number, since it uses less digits than its factorization.

2598785820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The square root of 2598785820 is about 50978.2877311508. The cubic root of 2598785820 is about 1374.8547848846.

The spelling of 2598785820 in words is "two billion, five hundred ninety-eight million, seven hundred eighty-five thousand, eight hundred twenty".