730751 has 4 divisors (see below), whose sum is σ = 835152. Its totient is φ = 626352.

The previous prime is 730747. The next prime is 730753. The reversal of 730751 is 157037.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 730751 - 2² = 730747 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52190 + ... + 52203.

It is an arithmetic number, because the mean of its divisors is an integer number (208788).

2⁷³⁰⁷⁵¹ is an apocalyptic number.

730751 is a deficient number, since it is larger than the sum of its proper divisors (104401).

730751 is a wasteful number, since it uses less digits than its factorization.

730751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104400.

The product of its (nonzero) digits is 735, while the sum is 23.

The square root of 730751 is about 854.8397510645. The cubic root of 730751 is about 90.0719999978.

Adding to 730751 its reverse (157037), we get a palindrome (887788).

The spelling of 730751 in words is "seven hundred thirty thousand, seven hundred fifty-one".