8672729 has 8 divisors (see below), whose sum is σ = 9394560. Its totient is φ = 7958736.

The previous prime is 8672723. The next prime is 8672731. The reversal of 8672729 is 9272768.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8672729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8672723) 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 7 ways as a sum of consecutive naturals, for example, 464 + ... + 4190.

It is an arithmetic number, because the mean of its divisors is an integer number (1174320).

Almost surely, 2^8672729 is an apocalyptic number.

It is an amenable number.

8672729 is a deficient number, since it is larger than the sum of its proper divisors (721831).

8672729 is a wasteful number, since it uses less digits than its factorization.

8672729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3919.

The product of its digits is 84672, while the sum is 41.

The square root of 8672729 is about 2944.9497449023. The cubic root of 8672729 is about 205.4558880618.

The spelling of 8672729 in words is "eight million, six hundred seventy-two thousand, seven hundred twenty-nine".