12898631 has 4 divisors (see below), whose sum is σ = 13657392. Its totient is φ = 12139872.

The previous prime is 12898621. The next prime is 12898643. The reversal of 12898631 is 13689821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12898631 is a prime.

It is a super-2 number, since 2×12898631² = 332749363348322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12898621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379355 + ... + 379388.

It is an arithmetic number, because the mean of its divisors is an integer number (3414348).

Almost surely, 2^12898631 is an apocalyptic number.

12898631 is a deficient number, since it is larger than the sum of its proper divisors (758761).

12898631 is an equidigital number, since it uses as much as digits as its factorization.

12898631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758760.

The product of its digits is 20736, while the sum is 38.

The square root of 12898631 is about 3591.4664135977. The cubic root of 12898631 is about 234.5207132062.

The spelling of 12898631 in words is "twelve million, eight hundred ninety-eight thousand, six hundred thirty-one".