43683613 has 2 divisors, whose sum is σ = 43683614. Its totient is φ = 43683612.

The previous prime is 43683593. The next prime is 43683623. The reversal of 43683613 is 31638634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38402809 + 5280804 = 6197^2 + 2298^2 .

It is a cyclic number.

It is not a de Polignac number, because 43683613 - 2⁵ = 43683581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43683623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21841806 + 21841807.

It is an arithmetic number, because the mean of its divisors is an integer number (21841807).

Almost surely, 2^43683613 is an apocalyptic number.

It is an amenable number.

43683613 is a deficient number, since it is larger than the sum of its proper divisors (1).

43683613 is an equidigital number, since it uses as much as digits as its factorization.

43683613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 43683613 is about 6609.3579869757. The cubic root of 43683613 is about 352.1866181799.

The spelling of 43683613 in words is "forty-three million, six hundred eighty-three thousand, six hundred thirteen".