12698491 has 12 divisors (see below), whose sum is σ = 14230080. Its totient is φ = 11313120.

The previous prime is 12698453. The next prime is 12698503. The reversal of 12698491 is 19489621.

It is not a de Polignac number, because 12698491 - 2¹¹ = 12696443 is a prime.

It is a super-2 number, since 2×12698491² = 322503347354162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12698401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3606 + ... + 6196.

It is an arithmetic number, because the mean of its divisors is an integer number (1185840).

Almost surely, 2^12698491 is an apocalyptic number.

12698491 is a deficient number, since it is larger than the sum of its proper divisors (1531589).

12698491 is a wasteful number, since it uses less digits than its factorization.

12698491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646 (or 2633 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 12698491 is about 3563.4942121463. The cubic root of 12698491 is about 233.3014144547.

The spelling of 12698491 in words is "twelve million, six hundred ninety-eight thousand, four hundred ninety-one".