12650001 has 16 divisors (see below), whose sum is σ = 20759424. Its totient is φ = 6672384.

The previous prime is 12649993. The next prime is 12650021. The reversal of 12650001 is 10005621.

It is not a de Polignac number, because 12650001 - 2³ = 12649993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12650021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22896 + ... + 23441.

It is an arithmetic number, because the mean of its divisors is an integer number (1297464).

Almost surely, 2^12650001 is an apocalyptic number.

It is an amenable number.

12650001 is a deficient number, since it is larger than the sum of its proper divisors (8109423).

12650001 is a wasteful number, since it uses less digits than its factorization.

12650001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46360.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 12650001 is about 3556.6839893361. The cubic root of 12650001 is about 233.0040768749.

Adding to 12650001 its reverse (10005621), we get a palindrome (22655622).

The spelling of 12650001 in words is "twelve million, six hundred fifty thousand, one".