65312736 has 24 divisors (see below), whose sum is σ = 171446184. Its totient is φ = 21770880.

The previous prime is 65312717. The next prime is 65312773. The reversal of 65312736 is 63721356.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 65312697 and 65312706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340075 + ... + 340266.

It is an arithmetic number, because the mean of its divisors is an integer number (7143591).

Almost surely, 2^65312736 is an apocalyptic number.

It is an amenable number.

65312736 is an abundant number, since it is smaller than the sum of its proper divisors (106133448).

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

65312736 is a wasteful number, since it uses less digits than its factorization.

65312736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680354 (or 680346 counting only the distinct ones).

The product of its digits is 22680, while the sum is 33.

The square root of 65312736 is about 8081.6295386512. The cubic root of 65312736 is about 402.7163781342.

The spelling of 65312736 in words is "sixty-five million, three hundred twelve thousand, seven hundred thirty-six".