66383361 has 32 divisors (see below), whose sum is σ = 108397440. Its totient is φ = 39816000.

The previous prime is 66383329. The next prime is 66383371. The reversal of 66383361 is 16338366.

It is not a de Polignac number, because 66383361 - 2⁵ = 66383329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66383371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28891 + ... + 31103.

It is an arithmetic number, because the mean of its divisors is an integer number (3387420).

Almost surely, 2^66383361 is an apocalyptic number.

It is an amenable number.

66383361 is a deficient number, since it is larger than the sum of its proper divisors (42014079).

66383361 is a wasteful number, since it uses less digits than its factorization.

66383361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334 (or 2328 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 66383361 is about 8147.5984805340. The cubic root of 66383361 is about 404.9049433977.

It can be divided in two parts, 6638 and 3361, that added together give a palindrome (9999).

The spelling of 66383361 in words is "sixty-six million, three hundred eighty-three thousand, three hundred sixty-one".