12045691 has 8 divisors (see below), whose sum is σ = 13793760. Its totient is φ = 10304448.

The previous prime is 12045689. The next prime is 12045697. The reversal of 12045691 is 19654021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12045691 - 2¹ = 12045689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12045697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2925 + ... + 5713.

It is an arithmetic number, because the mean of its divisors is an integer number (1724220).

Almost surely, 2^12045691 is an apocalyptic number.

12045691 is a deficient number, since it is larger than the sum of its proper divisors (1748069).

12045691 is an equidigital number, since it uses as much as digits as its factorization.

12045691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12045691 is about 3470.6902771639. The cubic root of 12045691 is about 229.2330534866.

The spelling of 12045691 in words is "twelve million, forty-five thousand, six hundred ninety-one".