12998511 has 6 divisors (see below), whose sum is σ = 18775640. Its totient is φ = 8665668.

The previous prime is 12998509. The next prime is 12998521. The reversal of 12998511 is 11589921.

It is not a de Polignac number, because 12998511 - 2¹ = 12998509 is a prime.

It is a super-2 number, since 2×12998511² = 337922576434242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12998521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 722131 + ... + 722148.

Almost surely, 2^12998511 is an apocalyptic number.

12998511 is a deficient number, since it is larger than the sum of its proper divisors (5777129).

12998511 is a wasteful number, since it uses less digits than its factorization.

12998511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444285 (or 1444282 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 12998511 is about 3605.3447824029. The cubic root of 12998511 is about 235.1244911540.

The spelling of 12998511 in words is "twelve million, nine hundred ninety-eight thousand, five hundred eleven".