66079009 has 4 divisors (see below), whose sum is σ = 66112816. Its totient is φ = 66045204.

The previous prime is 66079007. The next prime is 66079031. The reversal of 66079009 is 90097066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90097066 = 2 ⋅45048533.

It is a cyclic number.

It is not a de Polignac number, because 66079009 - 2¹ = 66079007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66079007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13779 + ... + 17944.

It is an arithmetic number, because the mean of its divisors is an integer number (16528204).

Almost surely, 2^66079009 is an apocalyptic number.

It is an amenable number.

66079009 is a deficient number, since it is larger than the sum of its proper divisors (33807).

66079009 is a wasteful number, since it uses less digits than its factorization.

66079009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33806.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 66079009 is about 8128.8996180295. The cubic root of 66079009 is about 404.2851975207.

The spelling of 66079009 in words is "sixty-six million, seventy-nine thousand, nine".