66723196 has 24 divisors (see below), whose sum is σ = 118540800. Its totient is φ = 32858112.

The previous prime is 66723179. The next prime is 66723233. The reversal of 66723196 is 69132766.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148380 + ... + 148828.

It is an arithmetic number, because the mean of its divisors is an integer number (4939200).

Almost surely, 2^66723196 is an apocalyptic number.

It is an amenable number.

66723196 is a deficient number, since it is larger than the sum of its proper divisors (51817604).

66723196 is a wasteful number, since it uses less digits than its factorization.

66723196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933 (or 931 counting only the distinct ones).

The product of its digits is 81648, while the sum is 40.

The square root of 66723196 is about 8168.4267763138. The cubic root of 66723196 is about 405.5947082680.

The spelling of 66723196 in words is "sixty-six million, seven hundred twenty-three thousand, one hundred ninety-six".