12650491 has 4 divisors (see below), whose sum is σ = 14457712. Its totient is φ = 10843272.

The previous prime is 12650479. The next prime is 12650497. The reversal of 12650491 is 19405621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12650491 - 2⁵ = 12650459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12650497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903600 + ... + 903613.

It is an arithmetic number, because the mean of its divisors is an integer number (3614428).

Almost surely, 2^12650491 is an apocalyptic number.

12650491 is a deficient number, since it is larger than the sum of its proper divisors (1807221).

12650491 is an equidigital number, since it uses as much as digits as its factorization.

12650491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807220.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12650491 is about 3556.7528730571. The cubic root of 12650491 is about 233.0070853206.

The spelling of 12650491 in words is "twelve million, six hundred fifty thousand, four hundred ninety-one".