66040933 has 8 divisors (see below), whose sum is σ = 75867968. Its totient is φ = 56312064.

The previous prime is 66040853. The next prime is 66040957. The reversal of 66040933 is 33904066.

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 66040933 - 2⁹ = 66040421 is a prime.

It is a super-2 number, since 2×66040933² = 8722809663020978, 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 = 66040895 and 66040904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66040033) 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, 23091 + ... + 25792.

It is an arithmetic number, because the mean of its divisors is an integer number (9483496).

Almost surely, 2^66040933 is an apocalyptic number.

It is an amenable number.

66040933 is a deficient number, since it is larger than the sum of its proper divisors (9827035).

66040933 is a wasteful number, since it uses less digits than its factorization.

66040933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49083.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 66040933 is about 8126.5572661491. The cubic root of 66040933 is about 404.2075302904.

Adding to 66040933 its reverse (33904066), we get a palindrome (99944999).

The spelling of 66040933 in words is "sixty-six million, forty thousand, nine hundred thirty-three".