66045512 has 32 divisors (see below), whose sum is σ = 139164480. Its totient is φ = 29156160.

The previous prime is 66045503. The next prime is 66045517. The reversal of 66045512 is 21554066.

It is not an unprimeable number, because it can be changed into a prime (66045517) 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, 11414 + ... + 16197.

It is an arithmetic number, because the mean of its divisors is an integer number (4348890).

Almost surely, 2^66045512 is an apocalyptic number.

It is an amenable number.

66045512 is an abundant number, since it is smaller than the sum of its proper divisors (73118968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66045512 is a wasteful number, since it uses less digits than its factorization.

66045512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27653 (or 27649 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 66045512 is about 8126.8389918836. The cubic root of 66045512 is about 404.2168720901.

Adding to 66045512 its reverse (21554066), we get a palindrome (87599578).

The spelling of 66045512 in words is "sixty-six million, forty-five thousand, five hundred twelve".