12655693 has 2 divisors, whose sum is σ = 12655694. Its totient is φ = 12655692.

The previous prime is 12655651. The next prime is 12655703. The reversal of 12655693 is 39655621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11812969 + 842724 = 3437^2 + 918^2 .

It is a cyclic number.

It is not a de Polignac number, because 12655693 - 2¹⁷ = 12524621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12655193) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6327846 + 6327847.

It is an arithmetic number, because the mean of its divisors is an integer number (6327847).

Almost surely, 2^12655693 is an apocalyptic number.

It is an amenable number.

12655693 is a deficient number, since it is larger than the sum of its proper divisors (1).

12655693 is an equidigital number, since it uses as much as digits as its factorization.

12655693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 37.

The square root of 12655693 is about 3557.4840828878. The cubic root of 12655693 is about 233.0390191734.

The spelling of 12655693 in words is "twelve million, six hundred fifty-five thousand, six hundred ninety-three".