65564043 has 12 divisors (see below), whose sum is σ = 89609784. Its totient is φ = 42640000.

The previous prime is 65564029. The next prime is 65564047. The reversal of 65564043 is 34046556.

It is not a de Polignac number, because 65564043 - 2⁵ = 65564011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65563995 and 65564013.

It is not an unprimeable number, because it can be changed into a prime (65564047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1458 + ... + 11543.

It is an arithmetic number, because the mean of its divisors is an integer number (7467482).

Almost surely, 2^65564043 is an apocalyptic number.

65564043 is a deficient number, since it is larger than the sum of its proper divisors (24045741).

65564043 is a wasteful number, since it uses less digits than its factorization.

65564043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13086 (or 13045 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 65564043 is about 8097.1626512007. The cubic root of 65564043 is about 403.2322342210.

The spelling of 65564043 in words is "sixty-five million, five hundred sixty-four thousand, forty-three".