320065747 has 4 divisors (see below), whose sum is σ = 323002240. Its totient is φ = 317129256.

The previous prime is 320065729. The next prime is 320065763. The reversal of 320065747 is 747560023.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320065747 - 2²³ = 311677139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320065717) 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, 1468083 + ... + 1468300.

It is an arithmetic number, because the mean of its divisors is an integer number (80750560).

Almost surely, 2^320065747 is an apocalyptic number.

320065747 is a deficient number, since it is larger than the sum of its proper divisors (2936493).

320065747 is a wasteful number, since it uses less digits than its factorization.

320065747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936492.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 320065747 is about 17890.3814101321. The cubic root of 320065747 is about 684.0372195414.

The spelling of 320065747 in words is "three hundred twenty million, sixty-five thousand, seven hundred forty-seven".