730001 has 4 divisors (see below), whose sum is σ = 731712. Its totient is φ = 728292.

The previous prime is 729991. The next prime is 730003. The reversal of 730001 is 100037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (730003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380 + ... + 1266.

It is an arithmetic number, because the mean of its divisors is an integer number (182928).

2⁷³⁰⁰⁰¹ is an apocalyptic number.

It is an amenable number.

730001 is a deficient number, since it is larger than the sum of its proper divisors (1711).

730001 is an equidigital number, since it uses as much as digits as its factorization.

730001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 21, while the sum is 11.

The square root of 730001 is about 854.4009597373. The cubic root of 730001 is about 90.0411745756.

Adding to 730001 its reverse (100037), we get a palindrome (830038).

The spelling of 730001 in words is "seven hundred thirty thousand, one".