13658997 has 16 divisors (see below), whose sum is σ = 19929600. Its totient is φ = 8252400.

The previous prime is 13658989. The next prime is 13659011. The reversal of 13658997 is 79985631.

It is not a de Polignac number, because 13658997 - 2³ = 13658989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13650997) 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 15 ways as a sum of consecutive naturals, for example, 19422 + ... + 20112.

It is an arithmetic number, because the mean of its divisors is an integer number (1245600).

Almost surely, 2^13658997 is an apocalyptic number.

It is an amenable number.

13658997 is a deficient number, since it is larger than the sum of its proper divisors (6270603).

13658997 is a wasteful number, since it uses less digits than its factorization.

13658997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304.

The product of its digits is 408240, while the sum is 48.

The square root of 13658997 is about 3695.8080307289. The cubic root of 13658997 is about 239.0412969960.

The spelling of 13658997 in words is "thirteen million, six hundred fifty-eight thousand, nine hundred ninety-seven".