13820697 has 24 divisors (see below), whose sum is σ = 21958560. Its totient is φ = 8306880.

The previous prime is 13820687. The next prime is 13820713. The reversal of 13820697 is 79602831.

13820697 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13820697 - 2⁶ = 13820633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13820687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13054 + ... + 14072.

It is an arithmetic number, because the mean of its divisors is an integer number (914940).

Almost surely, 2^13820697 is an apocalyptic number.

It is an amenable number.

13820697 is a deficient number, since it is larger than the sum of its proper divisors (8137863).

13820697 is a wasteful number, since it uses less digits than its factorization.

13820697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 13820697 is about 3717.6198030460. The cubic root of 13820697 is about 239.9808838941.

The spelling of 13820697 in words is "thirteen million, eight hundred twenty thousand, six hundred ninety-seven".