66100145 has 8 divisors (see below), whose sum is σ = 83495040. Its totient is φ = 50096880.

The previous prime is 66100117. The next prime is 66100187. The reversal of 66100145 is 54100166.

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

It is not a de Polignac number, because 66100145 - 2¹² = 66096049 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66100145.

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, 347801 + ... + 347990.

It is an arithmetic number, because the mean of its divisors is an integer number (10436880).

Almost surely, 2^66100145 is an apocalyptic number.

It is an amenable number.

66100145 is a deficient number, since it is larger than the sum of its proper divisors (17394895).

66100145 is a wasteful number, since it uses less digits than its factorization.

66100145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695815.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 66100145 is about 8130.1995670463. The cubic root of 66100145 is about 404.3282977485.

The spelling of 66100145 in words is "sixty-six million, one hundred thousand, one hundred forty-five".