66718246 has 16 divisors (see below), whose sum is σ = 115426080. Its totient is φ = 28330560.

The previous prime is 66718237. The next prime is 66718247. The reversal of 66718246 is 64281766.

66718246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66718199 and 66718208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66718247) 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 7 ways as a sum of consecutive naturals, for example, 20335 + ... + 23386.

It is an arithmetic number, because the mean of its divisors is an integer number (7214130).

Almost surely, 2^66718246 is an apocalyptic number.

66718246 is a deficient number, since it is larger than the sum of its proper divisors (48707834).

66718246 is a wasteful number, since it uses less digits than its factorization.

66718246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43839.

The product of its digits is 96768, while the sum is 40.

The square root of 66718246 is about 8168.1237747723. The cubic root of 66718246 is about 405.5846780558.

The spelling of 66718246 in words is "sixty-six million, seven hundred eighteen thousand, two hundred forty-six".