66723074 has 8 divisors (see below), whose sum is σ = 109183248. Its totient is φ = 30328660.

The previous prime is 66723071. The next prime is 66723077. The reversal of 66723074 is 47032766.

66723074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66723071) and next prime (66723077).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66723071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516412 + ... + 1516455.

It is an arithmetic number, because the mean of its divisors is an integer number (13647906).

Almost surely, 2^66723074 is an apocalyptic number.

66723074 is a deficient number, since it is larger than the sum of its proper divisors (42460174).

66723074 is a wasteful number, since it uses less digits than its factorization.

66723074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032880.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 66723074 is about 8168.4193085321. The cubic root of 66723074 is about 405.5944610647.

The spelling of 66723074 in words is "sixty-six million, seven hundred twenty-three thousand, seventy-four".