12986623 has 8 divisors (see below), whose sum is σ = 14808528. Its totient is φ = 11282304.

The previous prime is 12986609. The next prime is 12986647. The reversal of 12986623 is 32668921.

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

It is a cyclic number.

It is not a de Polignac number, because 12986623 - 2⁹ = 12986111 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 (12986653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29161 + ... + 29602.

It is an arithmetic number, because the mean of its divisors is an integer number (1851066).

Almost surely, 2^12986623 is an apocalyptic number.

12986623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12986623 is a deficient number, since it is larger than the sum of its proper divisors (1821905).

12986623 is a wasteful number, since it uses less digits than its factorization.

12986623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58793.

The product of its digits is 31104, while the sum is 37.

The square root of 12986623 is about 3603.6957418739. The cubic root of 12986623 is about 235.0527903132.

It can be divided in two parts, 1298 and 6623, that added together give a square (7921 = 89²).

The spelling of 12986623 in words is "twelve million, nine hundred eighty-six thousand, six hundred twenty-three".