66362009 has 8 divisors (see below), whose sum is σ = 75897408. Its totient is φ = 56840400.

The previous prime is 66361993. The next prime is 66362047. The reversal of 66362009 is 90026366.

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

It is a cyclic number.

It is not a de Polignac number, because 66362009 - 2⁴ = 66361993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66362059) 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, 10814 + ... + 15800.

It is an arithmetic number, because the mean of its divisors is an integer number (9487176).

Almost surely, 2^66362009 is an apocalyptic number.

It is an amenable number.

66362009 is a deficient number, since it is larger than the sum of its proper divisors (9535399).

66362009 is a wasteful number, since it uses less digits than its factorization.

66362009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6895.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 66362009 is about 8146.2880503945. The cubic root of 66362009 is about 404.8615266071.

The spelling of 66362009 in words is "sixty-six million, three hundred sixty-two thousand, nine".