66904322 has 4 divisors (see below), whose sum is σ = 100356486. Its totient is φ = 33452160.

The previous prime is 66904303. The next prime is 66904381. The reversal of 66904322 is 22340966.

66904322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 66896041 + 8281 = 8179^2 + 91^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16726079 + ... + 16726082.

Almost surely, 2^66904322 is an apocalyptic number.

66904322 is a deficient number, since it is larger than the sum of its proper divisors (33452164).

66904322 is a wasteful number, since it uses less digits than its factorization.

66904322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33452163.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 66904322 is about 8179.5062198155. The cubic root of 66904322 is about 405.9613842118.

The spelling of 66904322 in words is "sixty-six million, nine hundred four thousand, three hundred twenty-two".