12665394 has 24 divisors (see below), whose sum is σ = 31362240. Its totient is φ = 3618648.

The previous prime is 12665383. The next prime is 12665407. The reversal of 12665394 is 49356621.

It is a happy number.

12665394 is a `hidden beast` number, since 1 + 266 + 5 + 394 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50134 + ... + 50385.

It is an arithmetic number, because the mean of its divisors is an integer number (1306760).

Almost surely, 2^12665394 is an apocalyptic number.

12665394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12665394 is an abundant number, since it is smaller than the sum of its proper divisors (18696846).

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

12665394 is a wasteful number, since it uses less digits than its factorization.

12665394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100534 (or 100531 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 12665394 is about 3558.8472852878. The cubic root of 12665394 is about 233.0985479598.

The spelling of 12665394 in words is "twelve million, six hundred sixty-five thousand, three hundred ninety-four".