64541943 has 6 divisors (see below), whose sum is σ = 93227264. Its totient is φ = 43027956.

The previous prime is 64541923. The next prime is 64541947. The reversal of 64541943 is 34914546.

64541943 is a `hidden beast` number, since 645 + 4 + 1 + 9 + 4 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-64541943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64541898 and 64541907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64541947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3585655 + ... + 3585672.

Almost surely, 2^64541943 is an apocalyptic number.

64541943 is a deficient number, since it is larger than the sum of its proper divisors (28685321).

64541943 is a wasteful number, since it uses less digits than its factorization.

64541943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7171333 (or 7171330 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 64541943 is about 8033.8000348527. The cubic root of 64541943 is about 401.1258759518.

The spelling of 64541943 in words is "sixty-four million, five hundred forty-one thousand, nine hundred forty-three".