12291663 has 8 divisors (see below), whose sum is σ = 17353008. Its totient is φ = 7712384.

The previous prime is 12291661. The next prime is 12291673. The reversal of 12291663 is 36619221.

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

It is a cyclic number.

It is not a de Polignac number, because 12291663 - 2¹ = 12291661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12291663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12291661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120456 + ... + 120557.

It is an arithmetic number, because the mean of its divisors is an integer number (2169126).

Almost surely, 2^12291663 is an apocalyptic number.

12291663 is a deficient number, since it is larger than the sum of its proper divisors (5061345).

12291663 is a wasteful number, since it uses less digits than its factorization.

12291663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241033.

The product of its digits is 3888, while the sum is 30.

The square root of 12291663 is about 3505.9468050728. The cubic root of 12291663 is about 230.7828584858.

The spelling of 12291663 in words is "twelve million, two hundred ninety-one thousand, six hundred sixty-three".