13720568 has 32 divisors (see below), whose sum is σ = 26838000. Its totient is φ = 6570240.

The previous prime is 13720543. The next prime is 13720589. The reversal of 13720568 is 86502731.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18998 + ... + 19706.

Almost surely, 2^13720568 is an apocalyptic number.

It is an amenable number.

13720568 is a deficient number, since it is larger than the sum of its proper divisors (13117432).

13720568 is a wasteful number, since it uses less digits than its factorization.

13720568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 811 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 13720568 is about 3704.1285074900. The cubic root of 13720568 is about 239.3999361161.

The spelling of 13720568 in words is "thirteen million, seven hundred twenty thousand, five hundred sixty-eight".