12645669 has 8 divisors (see below), whose sum is σ = 16881280. Its totient is φ = 8420256.

The previous prime is 12645667. The next prime is 12645707. The reversal of 12645669 is 96654621.

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

It is not a de Polignac number, because 12645669 - 2¹ = 12645667 is a prime.

It is a super-2 number, since 2×12645669² = 319825888915122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12645667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089 + ... + 5145.

It is an arithmetic number, because the mean of its divisors is an integer number (2110160).

Almost surely, 2^12645669 is an apocalyptic number.

It is an amenable number.

12645669 is a deficient number, since it is larger than the sum of its proper divisors (4235611).

12645669 is a wasteful number, since it uses less digits than its factorization.

12645669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5099.

The product of its digits is 77760, while the sum is 39.

The square root of 12645669 is about 3556.0749429673. The cubic root of 12645669 is about 232.9774763789.

The spelling of 12645669 in words is "twelve million, six hundred forty-five thousand, six hundred sixty-nine".