72799609 has 8 divisors (see below), whose sum is σ = 74936000. Its totient is φ = 70672176.

The previous prime is 72799589. The next prime is 72799631. The reversal of 72799609 is 90699727.

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 72799609 - 2¹⁷ = 72668537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72799409) 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, 16492 + ... + 20434.

It is an arithmetic number, because the mean of its divisors is an integer number (9367000).

Almost surely, 2^72799609 is an apocalyptic number.

It is an amenable number.

72799609 is a deficient number, since it is larger than the sum of its proper divisors (2136391).

72799609 is a wasteful number, since it uses less digits than its factorization.

72799609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 72799609 is about 8532.2686900964. The cubic root of 72799609 is about 417.5511481911.

The spelling of 72799609 in words is "seventy-two million, seven hundred ninety-nine thousand, six hundred nine".