65786768 has 20 divisors (see below), whose sum is σ = 128278620. Its totient is φ = 32682624.

The previous prime is 65786767. The next prime is 65786783. The reversal of 65786768 is 86768756.

It can be written as a sum of positive squares in 2 ways, for example, as 37356544 + 28430224 = 6112^2 + 5332^2 .

It is not an unprimeable number, because it can be changed into a prime (65786767) 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, 10583 + ... + 15606.

It is an arithmetic number, because the mean of its divisors is an integer number (6413931).

Almost surely, 2^65786768 is an apocalyptic number.

It is an amenable number.

65786768 is a deficient number, since it is larger than the sum of its proper divisors (62491852).

65786768 is a wasteful number, since it uses less digits than its factorization.

65786768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26354 (or 26348 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 53.

The square root of 65786768 is about 8110.9042652469. The cubic root of 65786768 is about 403.6883195498.

The spelling of 65786768 in words is "sixty-five million, seven hundred eighty-six thousand, seven hundred sixty-eight".