730691 has 4 divisors (see below), whose sum is σ = 786912. Its totient is φ = 674472.

The previous prime is 730679. The next prime is 730727. The reversal of 730691 is 196037.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730691 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 730691.

It is not an unprimeable number, because it can be changed into a prime (730091) 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, 28091 + ... + 28116.

It is an arithmetic number, because the mean of its divisors is an integer number (196728).

2⁷³⁰⁶⁹¹ is an apocalyptic number.

730691 is a deficient number, since it is larger than the sum of its proper divisors (56221).

730691 is a wasteful number, since it uses less digits than its factorization.

730691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56220.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 730691 is about 854.8046560472. The cubic root of 730691 is about 90.0695347404.

The spelling of 730691 in words is "seven hundred thirty thousand, six hundred ninety-one".