65728313 has 8 divisors (see below), whose sum is σ = 75169728. Its totient is φ = 56299824.

The previous prime is 65728309. The next prime is 65728343. The reversal of 65728313 is 31382756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65728313 - 2² = 65728309 is a prime.

It is a super-2 number, since 2×65728313² = 8640422259651938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65728303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13370 + ... + 17612.

It is an arithmetic number, because the mean of its divisors is an integer number (9396216).

Almost surely, 2^65728313 is an apocalyptic number.

It is an amenable number.

65728313 is a deficient number, since it is larger than the sum of its proper divisors (9441415).

65728313 is a wasteful number, since it uses less digits than its factorization.

65728313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6463.

The product of its digits is 30240, while the sum is 35.

The square root of 65728313 is about 8107.2999821149. The cubic root of 65728313 is about 403.5687180244.

The spelling of 65728313 in words is "sixty-five million, seven hundred twenty-eight thousand, three hundred thirteen".