12677421 has 16 divisors (see below), whose sum is σ = 17483648. Its totient is φ = 8164800.

The previous prime is 12677417. The next prime is 12677429. The reversal of 12677421 is 12477621.

12677421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12677421 - 2² = 12677417 is a prime.

It is a super-2 number, since 2×12677421² = 321434006422482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12677429) 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 15 ways as a sum of consecutive naturals, for example, 19776 + ... + 20406.

It is an arithmetic number, because the mean of its divisors is an integer number (1092728).

Almost surely, 2^12677421 is an apocalyptic number.

It is an amenable number.

12677421 is a deficient number, since it is larger than the sum of its proper divisors (4806227).

12677421 is a wasteful number, since it uses less digits than its factorization.

12677421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852.

The product of its digits is 4704, while the sum is 30.

The square root of 12677421 is about 3560.5366168599. The cubic root of 12677421 is about 233.1723077211.

The spelling of 12677421 in words is "twelve million, six hundred seventy-seven thousand, four hundred twenty-one".