13780636 has 12 divisors (see below), whose sum is σ = 24571512. Its totient is φ = 6760208.

The previous prime is 13780631. The next prime is 13780651. The reversal of 13780636 is 63608731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13780631) 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 3 ways as a sum of consecutive naturals, for example, 32290 + ... + 32713.

It is an arithmetic number, because the mean of its divisors is an integer number (2047626).

Almost surely, 2^13780636 is an apocalyptic number.

It is an amenable number.

13780636 is a deficient number, since it is larger than the sum of its proper divisors (10790876).

13780636 is a wasteful number, since it uses less digits than its factorization.

13780636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65060 (or 65058 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 13780636 is about 3712.2279024866. The cubic root of 13780636 is about 239.7487880700.

The spelling of 13780636 in words is "thirteen million, seven hundred eighty thousand, six hundred thirty-six".