13917678 has 8 divisors (see below), whose sum is σ = 27835368. Its totient is φ = 4639224.

The previous prime is 13917637. The next prime is 13917703. The reversal of 13917678 is 87671931.

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

13917678 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159801 + ... + 1159812.

It is an arithmetic number, because the mean of its divisors is an integer number (3479421).

Almost surely, 2^13917678 is an apocalyptic number.

13917678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13917678 is a wasteful number, since it uses less digits than its factorization.

13917678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319618.

The product of its digits is 63504, while the sum is 42.

The square root of 13917678 is about 3730.6404275942. The cubic root of 13917678 is about 240.5408980950.

The spelling of 13917678 in words is "thirteen million, nine hundred seventeen thousand, six hundred seventy-eight".