12067591 has 2 divisors, whose sum is σ = 12067592. Its totient is φ = 12067590.

The previous prime is 12067577. The next prime is 12067631. The reversal of 12067591 is 19576021.

It is a weak prime.

It is an emirp because it is prime and its reverse (19576021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12067591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12067511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6033795 + 6033796.

It is an arithmetic number, because the mean of its divisors is an integer number (6033796).

Almost surely, 2^12067591 is an apocalyptic number.

12067591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12067591 is an equidigital number, since it uses as much as digits as its factorization.

12067591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 12067591 is about 3473.8438364440. The cubic root of 12067591 is about 229.3718905354.

The spelling of 12067591 in words is "twelve million, sixty-seven thousand, five hundred ninety-one".