65732768 has 12 divisors (see below), whose sum is σ = 129411450. Its totient is φ = 32866368.

The previous prime is 65732749. The next prime is 65732789. The reversal of 65732768 is 86723756.

It can be written as a sum of positive squares in only one way, i.e., 44462224 + 21270544 = 6668^2 + 4612^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027043 + ... + 1027106.

Almost surely, 2^65732768 is an apocalyptic number.

It is an amenable number.

65732768 is a deficient number, since it is larger than the sum of its proper divisors (63678682).

65732768 is a wasteful number, since it uses less digits than its factorization.

65732768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054159 (or 2054151 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The square root of 65732768 is about 8107.5747298437. The cubic root of 65732768 is about 403.5778356478.

The spelling of 65732768 in words is "sixty-five million, seven hundred thirty-two thousand, seven hundred sixty-eight".