936721 has 8 divisors (see below), whose sum is σ = 987840. Its totient is φ = 886512.

The previous prime is 936713. The next prime is 936731. The reversal of 936721 is 127639.

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

It is not a de Polignac number, because 936721 - 2³ = 936713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 936721.

It is not an unprimeable number, because it can be changed into a prime (936731) 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, 3051 + ... + 3343.

It is an arithmetic number, because the mean of its divisors is an integer number (123480).

2⁹³⁶⁷²¹ is an apocalyptic number.

It is an amenable number.

936721 is a deficient number, since it is larger than the sum of its proper divisors (51119).

936721 is a wasteful number, since it uses less digits than its factorization.

936721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455.

The product of its digits is 2268, while the sum is 28.

The square root of 936721 is about 967.8434790812. The cubic root of 936721 is about 97.8445752339.

The spelling of 936721 in words is "nine hundred thirty-six thousand, seven hundred twenty-one".