66045610 has 8 divisors (see below), whose sum is σ = 118882116. Its totient is φ = 26418240.

The previous prime is 66045599. The next prime is 66045619. The reversal of 66045610 is 1654066.

It can be written as a sum of positive squares in 2 ways, for example, as 65918161 + 127449 = 8119^2 + 357^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66045619) 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 3 ways as a sum of consecutive naturals, for example, 3302271 + ... + 3302290.

Almost surely, 2^66045610 is an apocalyptic number.

66045610 is a deficient number, since it is larger than the sum of its proper divisors (52836506).

66045610 is a wasteful number, since it uses less digits than its factorization.

66045610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6604568.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 66045610 is about 8126.8450212859. The cubic root of 66045610 is about 404.2170720191.

Adding to 66045610 its reverse (1654066), we get a palindrome (67699676).

The spelling of 66045610 in words is "sixty-six million, forty-five thousand, six hundred ten".