13608778 has 8 divisors (see below), whose sum is σ = 21300768. Its totient is φ = 6508524.

The previous prime is 13608739. The next prime is 13608779. The reversal of 13608778 is 87780631.

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 13608778.

It is not an unprimeable number, because it can be changed into a prime (13608779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147876 + ... + 147967.

It is an arithmetic number, because the mean of its divisors is an integer number (2662596).

Almost surely, 2^13608778 is an apocalyptic number.

13608778 is a deficient number, since it is larger than the sum of its proper divisors (7691990).

13608778 is a wasteful number, since it uses less digits than its factorization.

13608778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295868.

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

The square root of 13608778 is about 3689.0077256628. The cubic root of 13608778 is about 238.7479822203.

The spelling of 13608778 in words is "thirteen million, six hundred eight thousand, seven hundred seventy-eight".