13198690 has 8 divisors (see below), whose sum is σ = 23757660. Its totient is φ = 5279472.

The previous prime is 13198667. The next prime is 13198697. The reversal of 13198690 is 9689131.

It is a Cunningham number, because it is equal to 3633²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 13198689 + 1 = 3633^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13198690² = 348410835432200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13198697) 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, 659925 + ... + 659944.

Almost surely, 2^13198690 is an apocalyptic number.

13198690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13198690 is a deficient number, since it is larger than the sum of its proper divisors (10558970).

13198690 is a wasteful number, since it uses less digits than its factorization.

13198690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319876.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 13198690 is about 3633.0001376273. Note that the first 3 decimals coincide. The cubic root of 13198690 is about 236.3253317433.

The spelling of 13198690 in words is "thirteen million, one hundred ninety-eight thousand, six hundred ninety".