65993317 has 6 divisors (see below), whose sum is σ = 71460402. Its totient is φ = 60916752.

The previous prime is 65993309. The next prime is 65993351. The reversal of 65993317 is 71339956.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2217121 + 63776196 = 1489^2 + 7986^2 .

It is not a de Polignac number, because 65993317 - 2³ = 65993309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65993117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 195078 + ... + 195415.

It is an arithmetic number, because the mean of its divisors is an integer number (11910067).

Almost surely, 2^65993317 is an apocalyptic number.

It is an amenable number.

65993317 is a deficient number, since it is larger than the sum of its proper divisors (5467085).

65993317 is a wasteful number, since it uses less digits than its factorization.

65993317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390519 (or 390506 counting only the distinct ones).

The product of its digits is 153090, while the sum is 43.

The square root of 65993317 is about 8123.6270840063. The cubic root of 65993317 is about 404.1103613962.

The spelling of 65993317 in words is "sixty-five million, nine hundred ninety-three thousand, three hundred seventeen".