12990651 has 8 divisors (see below), whose sum is σ = 17431824. Its totient is φ = 8604960.

The previous prime is 12990647. The next prime is 12990667. The reversal of 12990651 is 15609921.

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

It is not a de Polignac number, because 12990651 - 2² = 12990647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12990631) 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 7 ways as a sum of consecutive naturals, for example, 13320 + ... + 14261.

It is an arithmetic number, because the mean of its divisors is an integer number (2178978).

Almost surely, 2^12990651 is an apocalyptic number.

12990651 is a deficient number, since it is larger than the sum of its proper divisors (4441173).

12990651 is a wasteful number, since it uses less digits than its factorization.

12990651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27741.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 12990651 is about 3604.2545692556. The cubic root of 12990651 is about 235.0770895420.

The spelling of 12990651 in words is "twelve million, nine hundred ninety thousand, six hundred fifty-one".