12867621 has 16 divisors (see below), whose sum is σ = 18908736. Its totient is φ = 7733376.

The previous prime is 12867611. The next prime is 12867629. The reversal of 12867621 is 12676821.

It is not a de Polignac number, because 12867621 - 2⁷ = 12867493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12867629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2160 + ... + 5513.

It is an arithmetic number, because the mean of its divisors is an integer number (1181796).

Almost surely, 2^12867621 is an apocalyptic number.

It is an amenable number.

12867621 is a deficient number, since it is larger than the sum of its proper divisors (6041115).

12867621 is a wasteful number, since it uses less digits than its factorization.

12867621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7732.

The product of its digits is 8064, while the sum is 33.

The square root of 12867621 is about 3587.1466376495. The cubic root of 12867621 is about 234.3326228805.

The spelling of 12867621 in words is "twelve million, eight hundred sixty-seven thousand, six hundred twenty-one".