43073663 has 4 divisors (see below), whose sum is σ = 44463168. Its totient is φ = 41684160.

The previous prime is 43073651. The next prime is 43073669. The reversal of 43073663 is 36637034.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43073663 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 (43073669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694706 + ... + 694767.

It is an arithmetic number, because the mean of its divisors is an integer number (11115792).

Almost surely, 2^43073663 is an apocalyptic number.

43073663 is a deficient number, since it is larger than the sum of its proper divisors (1389505).

43073663 is a wasteful number, since it uses less digits than its factorization.

43073663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389504.

The product of its (nonzero) digits is 27216, while the sum is 32.

The square root of 43073663 is about 6563.0528719492. The cubic root of 43073663 is about 350.5397468022.

The spelling of 43073663 in words is "forty-three million, seventy-three thousand, six hundred sixty-three".