66131033 has 8 divisors (see below), whose sum is σ = 68625216. Its totient is φ = 63680400.

The previous prime is 66130993. The next prime is 66131041. The reversal of 66131033 is 33013166.

66131033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 66131033 - 2⁸ = 66130777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66131633) 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 7 ways as a sum of consecutive naturals, for example, 7778 + ... + 13883.

It is an arithmetic number, because the mean of its divisors is an integer number (8578152).

Almost surely, 2^66131033 is an apocalyptic number.

It is an amenable number.

66131033 is a deficient number, since it is larger than the sum of its proper divisors (2494183).

66131033 is a wasteful number, since it uses less digits than its factorization.

66131033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21775.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 66131033 is about 8132.0989295507. The cubic root of 66131033 is about 404.3912675935.

Adding to 66131033 its reverse (33013166), we get a palindrome (99144199).

The spelling of 66131033 in words is "sixty-six million, one hundred thirty-one thousand, thirty-three".