12912651 has 12 divisors (see below), whose sum is σ = 18709600. Its totient is φ = 8581680.

The previous prime is 12912649. The next prime is 12912659. The reversal of 12912651 is 15621921.

12912651 is a `hidden beast` number, since 1 + 2 + 9 + 1 + 2 + 651 = 666.

It is not a de Polignac number, because 12912651 - 2¹ = 12912649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12912659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1086 + ... + 5196.

Almost surely, 2^12912651 is an apocalyptic number.

12912651 is a deficient number, since it is larger than the sum of its proper divisors (5796949).

12912651 is a wasteful number, since it uses less digits than its factorization.

12912651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466 (or 4463 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 12912651 is about 3593.4177324658. The cubic root of 12912651 is about 234.6056521904.

The spelling of 12912651 in words is "twelve million, nine hundred twelve thousand, six hundred fifty-one".