13993567 has 24 divisors (see below), whose sum is σ = 17507664. Its totient is φ = 11112192.

The previous prime is 13993549. The next prime is 13993579. The reversal of 13993567 is 76539931.

It is a happy number.

It is not a de Polignac number, because 13993567 - 2⁷ = 13993439 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13993517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89053 + ... + 89209.

It is an arithmetic number, because the mean of its divisors is an integer number (729486).

Almost surely, 2^13993567 is an apocalyptic number.

13993567 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

13993567 is a deficient number, since it is larger than the sum of its proper divisors (3514097).

13993567 is a wasteful number, since it uses less digits than its factorization.

13993567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 288 counting only the distinct ones).

The product of its digits is 153090, while the sum is 43.

The square root of 13993567 is about 3740.7976422148. The cubic root of 13993567 is about 240.9773054162.

The spelling of 13993567 in words is "thirteen million, nine hundred ninety-three thousand, five hundred sixty-seven".