8729665 has 8 divisors (see below), whose sum is σ = 11972160. Its totient is φ = 5986032.

The previous prime is 8729659. The next prime is 8729681. The reversal of 8729665 is 5669278.

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 8729665 - 2¹³ = 8721473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124675 + ... + 124744.

It is an arithmetic number, because the mean of its divisors is an integer number (1496520).

Almost surely, 2^8729665 is an apocalyptic number.

It is an amenable number.

8729665 is a deficient number, since it is larger than the sum of its proper divisors (3242495).

8729665 is a wasteful number, since it uses less digits than its factorization.

8729665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249431.

The product of its digits is 181440, while the sum is 43.

The square root of 8729665 is about 2954.6006498341. The cubic root of 8729665 is about 205.9045100523.

The spelling of 8729665 in words is "eight million, seven hundred twenty-nine thousand, six hundred sixty-five".