65171320 has 32 divisors (see below), whose sum is σ = 147801600. Its totient is φ = 25861248.

The previous prime is 65171299. The next prime is 65171333. The reversal of 65171320 is 2317156.

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, 1335 + ... + 11494.

It is an arithmetic number, because the mean of its divisors is an integer number (4618800).

Almost surely, 2^65171320 is an apocalyptic number.

It is an amenable number.

65171320 is an abundant number, since it is smaller than the sum of its proper divisors (82630280).

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

65171320 is a wasteful number, since it uses less digits than its factorization.

65171320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12967 (or 12963 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 65171320 is about 8072.8755719384. The cubic root of 65171320 is about 402.4255124946.

Adding to 65171320 its reverse (2317156), we get a palindrome (67488476).

The spelling of 65171320 in words is "sixty-five million, one hundred seventy-one thousand, three hundred twenty".