65317872 has 20 divisors (see below), whose sum is σ = 168737960. Its totient is φ = 21772608.

The previous prime is 65317871. The next prime is 65317909. The reversal of 65317872 is 27871356.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 65317872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65317871) 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, 680347 + ... + 680442.

It is an arithmetic number, because the mean of its divisors is an integer number (8436898).

Almost surely, 2^65317872 is an apocalyptic number.

It is an amenable number.

65317872 is an abundant number, since it is smaller than the sum of its proper divisors (103420088).

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

65317872 is a wasteful number, since it uses less digits than its factorization.

65317872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360800 (or 1360794 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 65317872 is about 8081.9472901028. The cubic root of 65317872 is about 402.7269339984.

The spelling of 65317872 in words is "sixty-five million, three hundred seventeen thousand, eight hundred seventy-two".