320263487 has 8 divisors (see below), whose sum is σ = 337334400. Its totient is φ = 303214104.

The previous prime is 320263439. The next prime is 320263507. The reversal of 320263487 is 784362023.

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 320263487 - 2¹² = 320259391 is a prime.

It is a super-2 number, since 2×320263487² = 205137402210798338, which contains 22 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 (320263087) 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, 31814 + ... + 40652.

It is an arithmetic number, because the mean of its divisors is an integer number (42166800).

Almost surely, 2^320263487 is an apocalyptic number.

320263487 is a deficient number, since it is larger than the sum of its proper divisors (17070913).

320263487 is a wasteful number, since it uses less digits than its factorization.

320263487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10765.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 320263487 is about 17895.9069901472. The cubic root of 320263487 is about 684.1780590151.

The spelling of 320263487 in words is "three hundred twenty million, two hundred sixty-three thousand, four hundred eighty-seven".