65317660 has 12 divisors (see below), whose sum is σ = 137167128. Its totient is φ = 26127056.

The previous prime is 65317643. The next prime is 65317669. The reversal of 65317660 is 6671356.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65317669) 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, 1632922 + ... + 1632961.

It is an arithmetic number, because the mean of its divisors is an integer number (11430594).

Almost surely, 2^65317660 is an apocalyptic number.

It is an amenable number.

65317660 is an abundant number, since it is smaller than the sum of its proper divisors (71849468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65317660 is a wasteful number, since it uses less digits than its factorization.

65317660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265892 (or 3265890 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 65317660 is about 8081.9341744412. The cubic root of 65317660 is about 402.7264982922.

The spelling of 65317660 in words is "sixty-five million, three hundred seventeen thousand, six hundred sixty".