66070843 has 4 divisors (see below), whose sum is σ = 66113080. Its totient is φ = 66028608.

The previous prime is 66070831. The next prime is 66070877. The reversal of 66070843 is 34807066.

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 66070843 - 2⁵ = 66070811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66070799 and 66070808.

It is not an unprimeable number, because it can be changed into a prime (66070813) 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, 18678 + ... + 21931.

It is an arithmetic number, because the mean of its divisors is an integer number (16528270).

Almost surely, 2^66070843 is an apocalyptic number.

66070843 is a deficient number, since it is larger than the sum of its proper divisors (42237).

66070843 is a wasteful number, since it uses less digits than its factorization.

66070843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42236.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 66070843 is about 8128.3973205054. The cubic root of 66070843 is about 404.2685430693.

The spelling of 66070843 in words is "sixty-six million, seventy thousand, eight hundred forty-three".