13693378 has 8 divisors (see below), whose sum is σ = 20743740. Its totient is φ = 6778800.

The previous prime is 13693333. The next prime is 13693391. The reversal of 13693378 is 87339631.

It can be written as a sum of positive squares in 2 ways, for example, as 9941409 + 3751969 = 3153^2 + 1937^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 13693378.

It is an unprimeable number.

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, 33693 + ... + 34096.

Almost surely, 2^13693378 is an apocalyptic number.

13693378 is a deficient number, since it is larger than the sum of its proper divisors (7050362).

13693378 is a wasteful number, since it uses less digits than its factorization.

13693378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67892.

The product of its digits is 81648, while the sum is 40.

The square root of 13693378 is about 3700.4564583305. The cubic root of 13693378 is about 239.2416922103.

The spelling of 13693378 in words is "thirteen million, six hundred ninety-three thousand, three hundred seventy-eight".