730631 has 8 divisors (see below), whose sum is σ = 804864. Its totient is φ = 657720.

The previous prime is 730619. The next prime is 730633. The reversal of 730631 is 136037.

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

It is a cyclic number.

It is not a de Polignac number, because 730631 - 2⁶ = 730567 is a prime.

It is a super-2 number, since 2×730631² = 1067643316322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730633) 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, 1136 + ... + 1658.

It is an arithmetic number, because the mean of its divisors is an integer number (100608).

2⁷³⁰⁶³¹ is an apocalyptic number.

730631 is a deficient number, since it is larger than the sum of its proper divisors (74233).

730631 is a wasteful number, since it uses less digits than its factorization.

730631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 730631 is about 854.7695595890. The cubic root of 730631 is about 90.0670693481.

Adding to 730631 its reverse (136037), we get a palindrome (866668).

It can be divided in two parts, 7306 and 31, that added together give a palindrome (7337).

The spelling of 730631 in words is "seven hundred thirty thousand, six hundred thirty-one".