727640 has 16 divisors (see below), whose sum is σ = 1637280. Its totient is φ = 291040.

The previous prime is 727633. The next prime is 727667. The reversal of 727640 is 46727.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 727640.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9056 + ... + 9135.

It is an arithmetic number, because the mean of its divisors is an integer number (102330).

2⁷²⁷⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

727640 is an abundant number, since it is smaller than the sum of its proper divisors (909640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

727640 is a wasteful number, since it uses less digits than its factorization.

727640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18202 (or 18198 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 727640 is about 853.0181709671. The cubic root of 727640 is about 89.9439980822.

The spelling of 727640 in words is "seven hundred twenty-seven thousand, six hundred forty".