43680071 has 4 divisors (see below), whose sum is σ = 43708392. Its totient is φ = 43651752.

The previous prime is 43680053. The next prime is 43680097. The reversal of 43680071 is 17008634.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17008634 = 2 ⋅8504317.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43680071 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 (43680041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11705 + ... + 14978.

It is an arithmetic number, because the mean of its divisors is an integer number (10927098).

Almost surely, 2^43680071 is an apocalyptic number.

43680071 is a deficient number, since it is larger than the sum of its proper divisors (28321).

43680071 is a wasteful number, since it uses less digits than its factorization.

43680071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28320.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 43680071 is about 6609.0900281355. The cubic root of 43680071 is about 352.1770991358.

The spelling of 43680071 in words is "forty-three million, six hundred eighty thousand, seventy-one".