65775320 has 32 divisors (see below), whose sum is σ = 159379920. Its totient is φ = 24286080.

The previous prime is 65775319. The next prime is 65775349. The reversal of 65775320 is 2357756.

It is a super-3 number, since 3×65775320³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62726 + ... + 63765.

Almost surely, 2^65775320 is an apocalyptic number.

It is an amenable number.

65775320 is an abundant number, since it is smaller than the sum of its proper divisors (93604600).

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

65775320 is a wasteful number, since it uses less digits than its factorization.

65775320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126515 (or 126511 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 65775320 is about 8110.1985179156. The cubic root of 65775320 is about 403.6649020140.

The spelling of 65775320 in words is "sixty-five million, seven hundred seventy-five thousand, three hundred twenty".