66076073 has 4 divisors (see below), whose sum is σ = 75515520. Its totient is φ = 56636628.

The previous prime is 66076069. The next prime is 66076081. The reversal of 66076073 is 37067066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66076073 - 2² = 66076069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66076273) 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, 4719713 + ... + 4719726.

It is an arithmetic number, because the mean of its divisors is an integer number (18878880).

Almost surely, 2^66076073 is an apocalyptic number.

It is an amenable number.

66076073 is a deficient number, since it is larger than the sum of its proper divisors (9439447).

66076073 is an equidigital number, since it uses as much as digits as its factorization.

66076073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9439446.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 66076073 is about 8128.7190257752. The cubic root of 66076073 is about 404.2792097446.

The spelling of 66076073 in words is "sixty-six million, seventy-six thousand, seventy-three".