43768641 has 16 divisors (see below), whose sum is σ = 66852864. Its totient is φ = 24951504.

The previous prime is 43768603. The next prime is 43768649. The reversal of 43768641 is 14686734.

It is not a de Polignac number, because 43768641 - 2⁶ = 43768577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43768641.

It is not an unprimeable number, because it can be changed into a prime (43768649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7576 + ... + 12038.

It is an arithmetic number, because the mean of its divisors is an integer number (4178304).

Almost surely, 2^43768641 is an apocalyptic number.

It is an amenable number.

43768641 is a deficient number, since it is larger than the sum of its proper divisors (23084223).

43768641 is a wasteful number, since it uses less digits than its factorization.

43768641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4940.

The product of its digits is 96768, while the sum is 39.

The square root of 43768641 is about 6615.7872547415. The cubic root of 43768641 is about 352.4149747146.

The spelling of 43768641 in words is "forty-three million, seven hundred sixty-eight thousand, six hundred forty-one".