66004533 has 12 divisors (see below), whose sum is σ = 108959968. Its totient is φ = 37716840.

The previous prime is 66004531. The next prime is 66004541. The reversal of 66004533 is 33540066.

66004533 is a `hidden beast` number, since 6 + 600 + 4 + 53 + 3 = 666.

It is not a de Polignac number, because 66004533 - 2¹ = 66004531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66004497 and 66004506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66004531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 523783 + ... + 523908.

Almost surely, 2^66004533 is an apocalyptic number.

66004533 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

66004533 is a deficient number, since it is larger than the sum of its proper divisors (42955435).

66004533 is a wasteful number, since it uses less digits than its factorization.

66004533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047704 (or 1047701 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 66004533 is about 8124.3173867101. The cubic root of 66004533 is about 404.1332538408.

Adding to 66004533 its reverse (33540066), we get a palindrome (99544599).

The spelling of 66004533 in words is "sixty-six million, four thousand, five hundred thirty-three".