134665693 has 2 divisors, whose sum is σ = 134665694. Its totient is φ = 134665692.

The previous prime is 134665649. The next prime is 134665703. The reversal of 134665693 is 396566431.

134665693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81054009 + 53611684 = 9003^2 + 7322^2 .

It is an emirp because it is prime and its reverse (396566431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134665693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134605693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67332846 + 67332847.

It is an arithmetic number, because the mean of its divisors is an integer number (67332847).

Almost surely, 2^134665693 is an apocalyptic number.

It is an amenable number.

134665693 is a deficient number, since it is larger than the sum of its proper divisors (1).

134665693 is an equidigital number, since it uses as much as digits as its factorization.

134665693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 43.

The square root of 134665693 is about 11604.5548385106. The cubic root of 134665693 is about 512.5689844083.

The spelling of 134665693 in words is "one hundred thirty-four million, six hundred sixty-five thousand, six hundred ninety-three".