13768646 has 4 divisors (see below), whose sum is σ = 20652972. Its totient is φ = 6884322.

The previous prime is 13768639. The next prime is 13768663. The reversal of 13768646 is 64686731.

13768646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64686731 = 4787 ⋅13513.

It is a super-2 number, since 2×13768646² = 379151225346632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3442160 + ... + 3442163.

It is an arithmetic number, because the mean of its divisors is an integer number (5163243).

Almost surely, 2^13768646 is an apocalyptic number.

13768646 is a deficient number, since it is larger than the sum of its proper divisors (6884326).

13768646 is an equidigital number, since it uses as much as digits as its factorization.

13768646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884325.

The product of its digits is 145152, while the sum is 41.

The square root of 13768646 is about 3710.6126178840. The cubic root of 13768646 is about 239.6792358360.

The spelling of 13768646 in words is "thirteen million, seven hundred sixty-eight thousand, six hundred forty-six".