66470443 has 4 divisors (see below), whose sum is σ = 71583568. Its totient is φ = 61357320.

The previous prime is 66470429. The next prime is 66470477. The reversal of 66470443 is 34407466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34407466 = 2 ⋅17203733.

It is a cyclic number.

It is not a de Polignac number, because 66470443 - 2²¹ = 64373291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66470399 and 66470408.

It is not an unprimeable number, because it can be changed into a prime (66470543) 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, 2556543 + ... + 2556568.

It is an arithmetic number, because the mean of its divisors is an integer number (17895892).

Almost surely, 2^66470443 is an apocalyptic number.

66470443 is a deficient number, since it is larger than the sum of its proper divisors (5113125).

66470443 is a wasteful number, since it uses less digits than its factorization.

66470443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113124.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 66470443 is about 8152.9407577880. The cubic root of 66470443 is about 405.0819180940.

The spelling of 66470443 in words is "sixty-six million, four hundred seventy thousand, four hundred forty-three".