13776081 has 8 divisors (see below), whose sum is σ = 20037984. Its totient is φ = 8349120.

The previous prime is 13776067. The next prime is 13776167. The reversal of 13776081 is 18067731.

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

It is not a de Polignac number, because 13776081 - 2⁶ = 13776017 is a prime.

It is a super-2 number, since 2×13776081² = 379560815437122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 417457 = 13776081 / (1 + 3 + 7 + 7 + 6 + 0 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (13776031) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 208696 + ... + 208761.

It is an arithmetic number, because the mean of its divisors is an integer number (2504748).

Almost surely, 2^13776081 is an apocalyptic number.

13776081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13776081 is a deficient number, since it is larger than the sum of its proper divisors (6261903).

13776081 is a wasteful number, since it uses less digits than its factorization.

13776081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417471.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 13776081 is about 3711.6143388019. The cubic root of 13776081 is about 239.7223699358.

The spelling of 13776081 in words is "thirteen million, seven hundred seventy-six thousand, eighty-one".