65320617 has 4 divisors (see below), whose sum is σ = 87094160. Its totient is φ = 43547076.

The previous prime is 65320603. The next prime is 65320649. The reversal of 65320617 is 71602356.

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.

It is not a de Polignac number, because 65320617 - 2⁴ = 65320601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65320117) 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, 10886767 + ... + 10886772.

It is an arithmetic number, because the mean of its divisors is an integer number (21773540).

Almost surely, 2^65320617 is an apocalyptic number.

It is an amenable number.

65320617 is a deficient number, since it is larger than the sum of its proper divisors (21773543).

65320617 is a wasteful number, since it uses less digits than its factorization.

65320617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21773542.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 65320617 is about 8082.1171112525. The cubic root of 65320617 is about 402.7325754862.

The spelling of 65320617 in words is "sixty-five million, three hundred twenty thousand, six hundred seventeen".