12787693 has 2 divisors, whose sum is σ = 12787694. Its totient is φ = 12787692.

The previous prime is 12787667. The next prime is 12787721. The reversal of 12787693 is 39678721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9753129 + 3034564 = 3123^2 + 1742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12787693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12787633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6393846 + 6393847.

It is an arithmetic number, because the mean of its divisors is an integer number (6393847).

Almost surely, 2^12787693 is an apocalyptic number.

It is an amenable number.

12787693 is a deficient number, since it is larger than the sum of its proper divisors (1).

12787693 is an equidigital number, since it uses as much as digits as its factorization.

12787693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 12787693 is about 3575.9883948358. The cubic root of 12787693 is about 233.8464244200.

The spelling of 12787693 in words is "twelve million, seven hundred eighty-seven thousand, six hundred ninety-three".