12681623 has 2 divisors, whose sum is σ = 12681624. Its totient is φ = 12681622.

The previous prime is 12681619. The next prime is 12681629. The reversal of 12681623 is 32618621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12681623 - 2² = 12681619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12681629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6340811 + 6340812.

It is an arithmetic number, because the mean of its divisors is an integer number (6340812).

Almost surely, 2^12681623 is an apocalyptic number.

12681623 is a deficient number, since it is larger than the sum of its proper divisors (1).

12681623 is an equidigital number, since it uses as much as digits as its factorization.

12681623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

The square root of 12681623 is about 3561.1266475653. The cubic root of 12681623 is about 233.1980669509.

The spelling of 12681623 in words is "twelve million, six hundred eighty-one thousand, six hundred twenty-three".