730567987 has 4 divisors (see below), whose sum is σ = 730911040. Its totient is φ = 730224936.

The previous prime is 730567961. The next prime is 730568011. The reversal of 730567987 is 789765037.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789765037 = 37 ⋅21345001.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730567987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730567927) 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, 168312 + ... + 172597.

It is an arithmetic number, because the mean of its divisors is an integer number (182727760).

Almost surely, 2^730567987 is an apocalyptic number.

730567987 is a deficient number, since it is larger than the sum of its proper divisors (343053).

730567987 is a wasteful number, since it uses less digits than its factorization.

730567987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343052.

The product of its (nonzero) digits is 2222640, while the sum is 52.

The square root of 730567987 is about 27029.0211994441. The cubic root of 730567987 is about 900.6448000661.

The spelling of 730567987 in words is "seven hundred thirty million, five hundred sixty-seven thousand, nine hundred eighty-seven".