66670326 has 12 divisors (see below), whose sum is σ = 144452412. Its totient is φ = 22223436.

The previous prime is 66670319. The next prime is 66670327. The reversal of 66670326 is 62307666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66670327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1851936 + ... + 1851971.

It is an arithmetic number, because the mean of its divisors is an integer number (12037701).

Almost surely, 2^66670326 is an apocalyptic number.

66670326 is an abundant number, since it is smaller than the sum of its proper divisors (77782086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66670326 is a wasteful number, since it uses less digits than its factorization.

66670326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703915 (or 3703912 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 66670326 is about 8165.1898936889. The cubic root of 66670326 is about 405.4875518373.

The spelling of 66670326 in words is "sixty-six million, six hundred seventy thousand, three hundred twenty-six".