72868009 has 8 divisors (see below), whose sum is σ = 74567520. Its totient is φ = 71184096.

The previous prime is 72868007. The next prime is 72868013. The reversal of 72868009 is 90086827.

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 72868009 - 2¹ = 72868007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72868007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5829 + ... + 13405.

It is an arithmetic number, because the mean of its divisors is an integer number (9320940).

Almost surely, 2^72868009 is an apocalyptic number.

It is an amenable number.

72868009 is a deficient number, since it is larger than the sum of its proper divisors (1699511).

72868009 is a wasteful number, since it uses less digits than its factorization.

72868009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7799.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 72868009 is about 8536.2760616091. The cubic root of 72868009 is about 417.6818794719.

The spelling of 72868009 in words is "seventy-two million, eight hundred sixty-eight thousand, nine".