66321107 has 8 divisors (see below), whose sum is σ = 66923184. Its totient is φ = 65721888.

The previous prime is 66321071. The next prime is 66321113. The reversal of 66321107 is 70112366.

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

It is a cyclic number.

It is not a de Polignac number, because 66321107 - 2⁶ = 66321043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66321127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90113 + ... + 90845.

It is an arithmetic number, because the mean of its divisors is an integer number (8365398).

Almost surely, 2^66321107 is an apocalyptic number.

66321107 is a deficient number, since it is larger than the sum of its proper divisors (602077).

66321107 is a wasteful number, since it uses less digits than its factorization.

66321107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 66321107 is about 8143.7771948894. Note that the first 3 decimals coincide. The cubic root of 66321107 is about 404.7783311677.

The spelling of 66321107 in words is "sixty-six million, three hundred twenty-one thousand, one hundred seven".