13683973 has 2 divisors, whose sum is σ = 13683974. Its totient is φ = 13683972.

The previous prime is 13683959. The next prime is 13683977. The reversal of 13683973 is 37938631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8567329 + 5116644 = 2927^2 + 2262^2 .

It is a cyclic number.

It is not a de Polignac number, because 13683973 - 2¹⁷ = 13552901 is a prime.

It is a super-2 number, since 2×13683973² = 374502234129458, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13683977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6841986 + 6841987.

It is an arithmetic number, because the mean of its divisors is an integer number (6841987).

Almost surely, 2^13683973 is an apocalyptic number.

It is an amenable number.

13683973 is a deficient number, since it is larger than the sum of its proper divisors (1).

13683973 is an equidigital number, since it uses as much as digits as its factorization.

13683973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 13683973 is about 3699.1854508797. The cubic root of 13683973 is about 239.1869070081.

The spelling of 13683973 in words is "thirteen million, six hundred eighty-three thousand, nine hundred seventy-three".