66434711 has 4 divisors (see below), whose sum is σ = 75925392. Its totient is φ = 56944032.

The previous prime is 66434701. The next prime is 66434717. The reversal of 66434711 is 11743466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66434711 - 2¹⁰ = 66433687 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 (66434717) 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, 4745330 + ... + 4745343.

It is an arithmetic number, because the mean of its divisors is an integer number (18981348).

Almost surely, 2^66434711 is an apocalyptic number.

66434711 is a deficient number, since it is larger than the sum of its proper divisors (9490681).

66434711 is an equidigital number, since it uses as much as digits as its factorization.

66434711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490680.

The product of its digits is 12096, while the sum is 32.

The square root of 66434711 is about 8150.7491066773. The cubic root of 66434711 is about 405.0093195031.

The spelling of 66434711 in words is "sixty-six million, four hundred thirty-four thousand, seven hundred eleven".