605813591840 has 96 divisors (see below), whose sum is σ = 1470633951024. Its totient is φ = 235661045760.

The previous prime is 605813591827. The next prime is 605813591893. The reversal of 605813591840 is 48195318506.

It can be written as a sum of positive squares in 8 ways, for example, as 532240284304 + 73573307536 = 729548^2 + 271244^2 .

It is a super-2 number, since 2×605813591840² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12650822 + ... + 12698618.

Almost surely, 2^605813591840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 605813591840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735316975512).

605813591840 is an abundant number, since it is smaller than the sum of its proper divisors (864820359184).

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

605813591840 is a wasteful number, since it uses less digits than its factorization.

605813591840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49990 (or 49982 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 605813591840 in words is "six hundred five billion, eight hundred thirteen million, five hundred ninety-one thousand, eight hundred forty".