731065 has 4 divisors (see below), whose sum is σ = 877284. Its totient is φ = 584848.

The previous prime is 731057. The next prime is 731113. The reversal of 731065 is 560137.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 558009 + 173056 = 747^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 731065 - 2³ = 731057 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

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, 73102 + ... + 73111.

It is an arithmetic number, because the mean of its divisors is an integer number (219321).

2⁷³¹⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

731065 is a deficient number, since it is larger than the sum of its proper divisors (146219).

731065 is a wasteful number, since it uses less digits than its factorization.

731065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146218.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 731065 is about 855.0233914929. The cubic root of 731065 is about 90.0848993110.

The spelling of 731065 in words is "seven hundred thirty-one thousand, sixty-five".