320986087 has 8 divisors (see below), whose sum is σ = 327916512. Its totient is φ = 314109600.

The previous prime is 320986067. The next prime is 320986093. The reversal of 320986087 is 780689023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320986087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320986067) 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, 1339 + ... + 25372.

It is an arithmetic number, because the mean of its divisors is an integer number (40989564).

Almost surely, 2^320986087 is an apocalyptic number.

320986087 is a deficient number, since it is larger than the sum of its proper divisors (6930425).

320986087 is a wasteful number, since it uses less digits than its factorization.

320986087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26969.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 320986087 is about 17916.0845889943. The cubic root of 320986087 is about 684.6922353394.

The spelling of 320986087 in words is "three hundred twenty million, nine hundred eighty-six thousand, eighty-seven".