66901326 has 8 divisors (see below), whose sum is σ = 133802664. Its totient is φ = 22300440.

The previous prime is 66901321. The next prime is 66901343. The reversal of 66901326 is 62310966.

It is a happy number.

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

66901326 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66901321) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5575105 + ... + 5575116.

It is an arithmetic number, because the mean of its divisors is an integer number (16725333).

Almost surely, 2^66901326 is an apocalyptic number.

66901326 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66901326 is a wasteful number, since it uses less digits than its factorization.

66901326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11150226.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 66901326 is about 8179.3230771256. The cubic root of 66901326 is about 405.9553244216.

The spelling of 66901326 in words is "sixty-six million, nine hundred one thousand, three hundred twenty-six".