66363683 has 4 divisors (see below), whose sum is σ = 66870408. Its totient is φ = 65856960.

The previous prime is 66363679. The next prime is 66363691. The reversal of 66363683 is 38636366.

66363683 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66363683 - 2² = 66363679 is a prime.

It is a super-4 number, since 4×66363683⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66363683.

It is not an unprimeable number, because it can be changed into a prime (66363623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253166 + ... + 253427.

It is an arithmetic number, because the mean of its divisors is an integer number (16717602).

Almost surely, 2^66363683 is an apocalyptic number.

66363683 is a deficient number, since it is larger than the sum of its proper divisors (506725).

66363683 is a wasteful number, since it uses less digits than its factorization.

66363683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506724.

The product of its digits is 279936, while the sum is 41.

The square root of 66363683 is about 8146.3907959292. The cubic root of 66363683 is about 404.8649308264.

It can be divided in two parts, 663 and 63683, that added together give a palindrome (64346).

The spelling of 66363683 in words is "sixty-six million, three hundred sixty-three thousand, six hundred eighty-three".