508784050681 has 9 divisors (see below), whose sum is σ = 515362956591. Its totient is φ = 502288109544.

The previous prime is 508784050679. The next prime is 508784050711. The reversal of 508784050681 is 186050487805.

The square root of 508784050681 is 713291.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 507882850281 + 901200400 = 712659^2 + 30020^2 .

It is not a de Polignac number, because 508784050681 - 2¹ = 508784050679 is a prime.

It is a super-2 number, since 2×508784050681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (508784050381) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 56345475 + ... + 56354503.

Almost surely, 2^508784050681 is an apocalyptic number.

508784050681 is the 713291-st square number.

508784050681 is the 356646-th centered octagonal number.

It is an amenable number.

508784050681 is a deficient number, since it is larger than the sum of its proper divisors (6578905910).

508784050681 is an frugal number, since it uses more digits than its factorization.

508784050681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18216 (or 9108 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 52.

The spelling of 508784050681 in words is "five hundred eight billion, seven hundred eighty-four million, fifty thousand, six hundred eighty-one".