66332530 has 16 divisors (see below), whose sum is σ = 130253184. Its totient is φ = 24120880.

The previous prime is 66332507. The next prime is 66332533. The reversal of 66332530 is 3523366.

It is not an unprimeable number, because it can be changed into a prime (66332533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301402 + ... + 301621.

It is an arithmetic number, because the mean of its divisors is an integer number (8140824).

Almost surely, 2^66332530 is an apocalyptic number.

66332530 is a deficient number, since it is larger than the sum of its proper divisors (63920654).

66332530 is a wasteful number, since it uses less digits than its factorization.

66332530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603041.

The product of its (nonzero) digits is 9720, while the sum is 28.

The square root of 66332530 is about 8144.4784977308. The cubic root of 66332530 is about 404.8015692068.

Adding to 66332530 its reverse (3523366), we get a palindrome (69855896).

The spelling of 66332530 in words is "sixty-six million, three hundred thirty-two thousand, five hundred thirty".