66042307 has 8 divisors (see below), whose sum is σ = 68290560. Its totient is φ = 63801480.

The previous prime is 66042289. The next prime is 66042311. The reversal of 66042307 is 70324066.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66042307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66042377) 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, 20808 + ... + 23770.

It is an arithmetic number, because the mean of its divisors is an integer number (8536320).

Almost surely, 2^66042307 is an apocalyptic number.

66042307 is a deficient number, since it is larger than the sum of its proper divisors (2248253).

66042307 is a wasteful number, since it uses less digits than its factorization.

66042307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 66042307 is about 8126.6418033527. The cubic root of 66042307 is about 404.2103334877.

It can be divided in two parts, 6604 and 2307, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 66042307 in words is "sixty-six million, forty-two thousand, three hundred seven".