66383131 has 8 divisors (see below), whose sum is σ = 70921280. Its totient is φ = 61949448.

The previous prime is 66383087. The next prime is 66383137. The reversal of 66383131 is 13138366.

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 66383131 - 2⁷ = 66383003 is a prime.

It is a super-2 number, since 2×66383131² = 8813440162726322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66383093 and 66383102.

It is not an unprimeable number, because it can be changed into a prime (66383137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24801 + ... + 27346.

It is an arithmetic number, because the mean of its divisors is an integer number (8865160).

Almost surely, 2^66383131 is an apocalyptic number.

66383131 is a deficient number, since it is larger than the sum of its proper divisors (4538149).

66383131 is a wasteful number, since it uses less digits than its factorization.

66383131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52233.

The product of its digits is 7776, while the sum is 31.

The square root of 66383131 is about 8147.5843659333. The cubic root of 66383131 is about 404.9044757692.

The spelling of 66383131 in words is "sixty-six million, three hundred eighty-three thousand, one hundred thirty-one".