320248687 has 8 divisors (see below), whose sum is σ = 350156160. Its totient is φ = 290473560.

The previous prime is 320248681. The next prime is 320248717. The reversal of 320248687 is 786842023.

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 320248687 - 2¹¹ = 320246639 is a prime.

It is a super-3 number, since 3×320248687³ (a number of 26 digits) contains 333 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 (320248681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27987 + ... + 37732.

It is an arithmetic number, because the mean of its divisors is an integer number (43769520).

Almost surely, 2^320248687 is an apocalyptic number.

320248687 is a deficient number, since it is larger than the sum of its proper divisors (29907473).

320248687 is a wasteful number, since it uses less digits than its factorization.

320248687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66173.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 320248687 is about 17895.4934829973. The cubic root of 320248687 is about 684.1675197855.

The spelling of 320248687 in words is "three hundred twenty million, two hundred forty-eight thousand, six hundred eighty-seven".