75612009 has 8 divisors (see below), whose sum is σ = 109981152. Its totient is φ = 45825440.

The previous prime is 75611999. The next prime is 75612011. The reversal of 75612009 is 90021657.

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 75612009 - 2⁷ = 75611881 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75612409) 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, 1145604 + ... + 1145669.

It is an arithmetic number, because the mean of its divisors is an integer number (13747644).

Almost surely, 2^75612009 is an apocalyptic number.

It is an amenable number.

75612009 is a deficient number, since it is larger than the sum of its proper divisors (34369143).

75612009 is a wasteful number, since it uses less digits than its factorization.

75612009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291287.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 75612009 is about 8695.5166033997. The cubic root of 75612009 is about 422.8603118947.

The spelling of 75612009 in words is "seventy-five million, six hundred twelve thousand, nine".