728707 has 8 divisors (see below), whose sum is σ = 876800. Its totient is φ = 591624.

The previous prime is 728701. The next prime is 728713. The reversal of 728707 is 707827.

728707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (728701) and next prime (728713).

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 728707 - 2³ = 728699 is a prime.

It is a Duffinian number.

728707 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (728701) 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, 2607 + ... + 2872.

It is an arithmetic number, because the mean of its divisors is an integer number (109600).

2⁷²⁸⁷⁰⁷ is an apocalyptic number.

728707 is a deficient number, since it is larger than the sum of its proper divisors (148093).

728707 is a wasteful number, since it uses less digits than its factorization.

728707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 728707 is about 853.6433681579. The cubic root of 728707 is about 89.9879407711.

The spelling of 728707 in words is "seven hundred twenty-eight thousand, seven hundred seven".