730987 has 8 divisors (see below), whose sum is σ = 780800. Its totient is φ = 682344.

The previous prime is 730973. The next prime is 730993. The reversal of 730987 is 789037.

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 730987 - 2¹⁹ = 206699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730187) 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, 1258 + ... + 1744.

It is an arithmetic number, because the mean of its divisors is an integer number (97600).

2⁷³⁰⁹⁸⁷ is an apocalyptic number.

730987 is a deficient number, since it is larger than the sum of its proper divisors (49813).

730987 is a wasteful number, since it uses less digits than its factorization.

730987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 730987 is about 854.9777774890. The cubic root of 730987 is about 90.0816953679.

It can be divided in two parts, 7309 and 87, that added together give a square (7396 = 86²).

The spelling of 730987 in words is "seven hundred thirty thousand, nine hundred eighty-seven".