66045066 has 32 divisors (see below), whose sum is σ = 138610176. Its totient is φ = 20952000.

The previous prime is 66045061. The next prime is 66045079. The reversal of 66045066 is 66054066.

It is not an unprimeable number, because it can be changed into a prime (66045061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8436 + ... + 14256.

It is an arithmetic number, because the mean of its divisors is an integer number (4331568).

Almost surely, 2^66045066 is an apocalyptic number.

66045066 is an abundant number, since it is smaller than the sum of its proper divisors (72565110).

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

66045066 is a wasteful number, since it uses less digits than its factorization.

66045066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5918.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 66045066 is about 8126.8115518941. The cubic root of 66045066 is about 404.2159622068.

The spelling of 66045066 in words is "sixty-six million, forty-five thousand, sixty-six".