66325667 has 4 divisors (see below), whose sum is σ = 66496560. Its totient is φ = 66154776.

The previous prime is 66325663. The next prime is 66325669. The reversal of 66325667 is 76652366.

66325667 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 is a cyclic number.

It is not a de Polignac number, because 66325667 - 2² = 66325663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66325661) 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 3 ways as a sum of consecutive naturals, for example, 84863 + ... + 85640.

It is an arithmetic number, because the mean of its divisors is an integer number (16624140).

Almost surely, 2^66325667 is an apocalyptic number.

66325667 is a deficient number, since it is larger than the sum of its proper divisors (170893).

66325667 is a wasteful number, since it uses less digits than its factorization.

66325667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170892.

The product of its digits is 272160, while the sum is 41.

The square root of 66325667 is about 8144.0571584438. The cubic root of 66325667 is about 404.7876079876.

The spelling of 66325667 in words is "sixty-six million, three hundred twenty-five thousand, six hundred sixty-seven".