12400613 has 2 divisors, whose sum is σ = 12400614. Its totient is φ = 12400612.

The previous prime is 12400601. The next prime is 12400627. The reversal of 12400613 is 31600421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8392609 + 4008004 = 2897^2 + 2002^2 .

It is an emirp because it is prime and its reverse (31600421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12400613 - 2¹⁶ = 12335077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12400591 and 12400600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12400643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200306 + 6200307.

It is an arithmetic number, because the mean of its divisors is an integer number (6200307).

Almost surely, 2^12400613 is an apocalyptic number.

It is an amenable number.

12400613 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400613 is an equidigital number, since it uses as much as digits as its factorization.

12400613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 12400613 is about 3521.4504114072. The cubic root of 12400613 is about 231.4627194841.

The spelling of 12400613 in words is "twelve million, four hundred thousand, six hundred thirteen".