12667401 has 16 divisors (see below), whose sum is σ = 19225920. Its totient is φ = 8238240.

The previous prime is 12667387. The next prime is 12667427. The reversal of 12667401 is 10476621.

12667401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12667401 - 2⁶ = 12667337 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12667441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4615 + ... + 6828.

It is an arithmetic number, because the mean of its divisors is an integer number (1201620).

Almost surely, 2^12667401 is an apocalyptic number.

It is an amenable number.

12667401 is a deficient number, since it is larger than the sum of its proper divisors (6558519).

12667401 is a wasteful number, since it uses less digits than its factorization.

12667401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11493 (or 11487 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 12667401 is about 3559.1292474424. The cubic root of 12667401 is about 233.1108598304.

The spelling of 12667401 in words is "twelve million, six hundred sixty-seven thousand, four hundred one".