65386320 has 80 divisors (see below), whose sum is σ = 204576192. Its totient is φ = 17274880.

The previous prime is 65386313. The next prime is 65386333. The reversal of 65386320 is 2368356.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25915 + ... + 28325.

Almost surely, 2^65386320 is an apocalyptic number.

65386320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65386320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102288096).

65386320 is an abundant number, since it is smaller than the sum of its proper divisors (139189872).

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

65386320 is a wasteful number, since it uses less digits than its factorization.

65386320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540 (or 2534 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 65386320 is about 8086.1808043105. The cubic root of 65386320 is about 402.8675602874.

The spelling of 65386320 in words is "sixty-five million, three hundred eighty-six thousand, three hundred twenty".