13778608 has 10 divisors (see below), whose sum is σ = 26696084. Its totient is φ = 6889296.

The previous prime is 13778603. The next prime is 13778623. The reversal of 13778608 is 80687731.

13778608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13778603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430566 + ... + 430597.

Almost surely, 2^13778608 is an apocalyptic number.

It is an amenable number.

13778608 is a deficient number, since it is larger than the sum of its proper divisors (12917476).

13778608 is an equidigital number, since it uses as much as digits as its factorization.

13778608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861171 (or 861165 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 13778608 is about 3711.9547411034. The cubic root of 13778608 is about 239.7370267746.

The spelling of 13778608 in words is "thirteen million, seven hundred seventy-eight thousand, six hundred eight".