12961607 has 2 divisors, whose sum is σ = 12961608. Its totient is φ = 12961606.

The previous prime is 12961603. The next prime is 12961621. The reversal of 12961607 is 70616921.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (70616921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12961607 - 2² = 12961603 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12961601) 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 as a sum of consecutive naturals, namely, 6480803 + 6480804.

It is an arithmetic number, because the mean of its divisors is an integer number (6480804).

Almost surely, 2^12961607 is an apocalyptic number.

12961607 is a deficient number, since it is larger than the sum of its proper divisors (1).

12961607 is an equidigital number, since it uses as much as digits as its factorization.

12961607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 12961607 is about 3600.2231875260. The cubic root of 12961607 is about 234.9017666990.

The spelling of 12961607 in words is "twelve million, nine hundred sixty-one thousand, six hundred seven".