12149665 has 8 divisors (see below), whose sum is σ = 15905088. Its totient is φ = 8836080.

The previous prime is 12149663. The next prime is 12149671. The reversal of 12149665 is 56694121.

12149665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12149665 - 2¹ = 12149663 is a prime.

It is a super-2 number, since 2×12149665² = 295228719224450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12149665.

It is not an unprimeable number, because it can be changed into a prime (12149663) 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, 110397 + ... + 110506.

It is an arithmetic number, because the mean of its divisors is an integer number (1988136).

Almost surely, 2^12149665 is an apocalyptic number.

It is an amenable number.

12149665 is a deficient number, since it is larger than the sum of its proper divisors (3755423).

12149665 is a wasteful number, since it uses less digits than its factorization.

12149665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220919.

The product of its digits is 12960, while the sum is 34.

The square root of 12149665 is about 3485.6369575732. The cubic root of 12149665 is about 229.8907168290.

The spelling of 12149665 in words is "twelve million, one hundred forty-nine thousand, six hundred sixty-five".