320285577 has 4 divisors (see below), whose sum is σ = 427047440. Its totient is φ = 213523716.

The previous prime is 320285569. The next prime is 320285591. The reversal of 320285577 is 775582023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 775582023 = 3 ⋅258527341.

It is not a de Polignac number, because 320285577 - 2³ = 320285569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320285507) 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, 53380927 + ... + 53380932.

It is an arithmetic number, because the mean of its divisors is an integer number (106761860).

Almost surely, 2^320285577 is an apocalyptic number.

It is an amenable number.

320285577 is a deficient number, since it is larger than the sum of its proper divisors (106761863).

320285577 is a wasteful number, since it uses less digits than its factorization.

320285577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106761862.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 320285577 is about 17896.5241597356. The cubic root of 320285577 is about 684.1937889234.

The spelling of 320285577 in words is "three hundred twenty million, two hundred eighty-five thousand, five hundred seventy-seven".