320463861 has 16 divisors (see below), whose sum is σ = 450201600. Its totient is φ = 202205808.

The previous prime is 320463851. The next prime is 320463887. The reversal of 320463861 is 168364023.

It is not a de Polignac number, because 320463861 - 2¹³ = 320455669 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320463851) 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 15 ways as a sum of consecutive naturals, for example, 80070 + ... + 83976.

It is an arithmetic number, because the mean of its divisors is an integer number (28137600).

Almost surely, 2^320463861 is an apocalyptic number.

It is an amenable number.

320463861 is a deficient number, since it is larger than the sum of its proper divisors (129737739).

320463861 is a wasteful number, since it uses less digits than its factorization.

320463861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 320463861 is about 17901.5044339854. The cubic root of 320463861 is about 684.3207154207.

The spelling of 320463861 in words is "three hundred twenty million, four hundred sixty-three thousand, eight hundred sixty-one".