1306693 has 2 divisors, whose sum is σ = 1306694. Its totient is φ = 1306692.

The previous prime is 1306691. The next prime is 1306717. The reversal of 1306693 is 3966031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1292769 + 13924 = 1137^2 + 118^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306693 - 2¹ = 1306691 is a prime.

Together with 1306691, it forms a pair of twin primes.

1306693 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653346 + 653347.

It is an arithmetic number, because the mean of its divisors is an integer number (653347).

2^1306693 is an apocalyptic number.

It is an amenable number.

1306693 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306693 is an equidigital number, since it uses as much as digits as its factorization.

1306693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 1306693 is about 1143.1067316747. The cubic root of 1306693 is about 109.3262675965.

The spelling of 1306693 in words is "one million, three hundred six thousand, six hundred ninety-three".