500998689 has 21 divisors (see below), whose sum is σ = 752061603. Its totient is φ = 333596232.

The previous prime is 500998679. The next prime is 500998699. The reversal of 500998689 is 986899005.

The square root of 500998689 is 22383.

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

It is an interprime number because it is at equal distance from previous prime (500998679) and next prime (500998699).

It can be written as a sum of positive squares in only one way, i.e., 288422289 + 212576400 = 16983^2 + 14580^2 .

It is not a de Polignac number, because 500998689 - 2²¹ = 498901537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (500998679) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 603927 + ... + 604755.

Almost surely, 2^500998689 is an apocalyptic number.

500998689 is the 22383-rd square number.

500998689 is the 11192-nd centered octagonal number.

It is an amenable number.

500998689 is a deficient number, since it is larger than the sum of its proper divisors (251062914).

500998689 is an frugal number, since it uses more digits than its factorization.

500998689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The cubic root of 500998689 is about 794.2286145323.

The spelling of 500998689 in words is "five hundred million, nine hundred ninety-eight thousand, six hundred eighty-nine".