66321105 has 8 divisors (see below), whose sum is σ = 106113792. Its totient is φ = 35371248.

The previous prime is 66321071. The next prime is 66321113. The reversal of 66321105 is 50112366.

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

It is not a de Polignac number, because 66321105 - 2¹⁶ = 66255569 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2210689 + ... + 2210718.

It is an arithmetic number, because the mean of its divisors is an integer number (13264224).

Almost surely, 2^66321105 is an apocalyptic number.

It is an amenable number.

66321105 is a deficient number, since it is larger than the sum of its proper divisors (39792687).

66321105 is a wasteful number, since it uses less digits than its factorization.

66321105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421415.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 66321105 is about 8143.7770720962. Note that the first 3 decimals coincide. The cubic root of 66321105 is about 404.7783270988.

The spelling of 66321105 in words is "sixty-six million, three hundred twenty-one thousand, one hundred five".