13650691 has 2 divisors, whose sum is σ = 13650692. Its totient is φ = 13650690.

The previous prime is 13650667. The next prime is 13650701. The reversal of 13650691 is 19605631.

13650691 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13650691 - 2⁷ = 13650563 is a prime.

It is not a weakly prime, because it can be changed into another prime (13650631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6825345 + 6825346.

It is an arithmetic number, because the mean of its divisors is an integer number (6825346).

Almost surely, 2^13650691 is an apocalyptic number.

13650691 is a deficient number, since it is larger than the sum of its proper divisors (1).

13650691 is an equidigital number, since it uses as much as digits as its factorization.

13650691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 13650691 is about 3694.6841542952. The cubic root of 13650691 is about 238.9928337108.

It can be divided in two parts, 13650 and 691, that added together give a palindrome (14341).

The spelling of 13650691 in words is "thirteen million, six hundred fifty thousand, six hundred ninety-one".