12651961 has 8 divisors (see below), whose sum is σ = 15310080. Its totient is φ = 10206528.

The previous prime is 12651953. The next prime is 12651971. The reversal of 12651961 is 16915621.

12651961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12651961 - 2³ = 12651953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12651941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53041 + ... + 53278.

It is an arithmetic number, because the mean of its divisors is an integer number (1913760).

Almost surely, 2^12651961 is an apocalyptic number.

It is an amenable number.

12651961 is a deficient number, since it is larger than the sum of its proper divisors (2658119).

12651961 is a wasteful number, since it uses less digits than its factorization.

12651961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106343.

The product of its digits is 3240, while the sum is 31.

The square root of 12651961 is about 3556.9595162161. The cubic root of 12651961 is about 233.0161101916.

The spelling of 12651961 in words is "twelve million, six hundred fifty-one thousand, nine hundred sixty-one".