12949566 has 16 divisors (see below), whose sum is σ = 29599104. Its totient is φ = 3699864.

The previous prime is 12949553. The next prime is 12949571. The reversal of 12949566 is 66594921.

It is a happy number.

12949566 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 308323 = 12949566 / (1 + 2 + 9 + 4 + 9 + 5 + 6 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154120 + ... + 154203.

It is an arithmetic number, because the mean of its divisors is an integer number (1849944).

Almost surely, 2^12949566 is an apocalyptic number.

12949566 is an abundant number, since it is smaller than the sum of its proper divisors (16649538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12949566 is a wasteful number, since it uses less digits than its factorization.

12949566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308335.

The product of its digits is 116640, while the sum is 42.

The square root of 12949566 is about 3598.5505415375. The cubic root of 12949566 is about 234.8290049270.

The spelling of 12949566 in words is "twelve million, nine hundred forty-nine thousand, five hundred sixty-six".