65728734 has 8 divisors (see below), whose sum is σ = 131457480. Its totient is φ = 21909576.

The previous prime is 65728727. The next prime is 65728739. The reversal of 65728734 is 43782756.

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

65728734 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65728739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5477389 + ... + 5477400.

It is an arithmetic number, because the mean of its divisors is an integer number (16432185).

Almost surely, 2^65728734 is an apocalyptic number.

65728734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65728734 is a wasteful number, since it uses less digits than its factorization.

65728734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10954794.

The product of its digits is 282240, while the sum is 42.

The square root of 65728734 is about 8107.3259463278. The cubic root of 65728734 is about 403.5695796625.

The spelling of 65728734 in words is "sixty-five million, seven hundred twenty-eight thousand, seven hundred thirty-four".