66366147 has 8 divisors (see below), whose sum is σ = 93693456. Its totient is φ = 41641472.

The previous prime is 66366137. The next prime is 66366149. The reversal of 66366147 is 74166366.

It is a happy number.

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 66366147 - 2¹¹ = 66364099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66366149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650598 + ... + 650699.

It is an arithmetic number, because the mean of its divisors is an integer number (11711682).

Almost surely, 2^66366147 is an apocalyptic number.

66366147 is a deficient number, since it is larger than the sum of its proper divisors (27327309).

66366147 is a wasteful number, since it uses less digits than its factorization.

66366147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301317.

The product of its digits is 108864, while the sum is 39.

The square root of 66366147 is about 8146.5420271426. The cubic root of 66366147 is about 404.8699414728.

The spelling of 66366147 in words is "sixty-six million, three hundred sixty-six thousand, one hundred forty-seven".