65501768 has 8 divisors (see below), whose sum is σ = 122815830. Its totient is φ = 32750880.

The previous prime is 65501753. The next prime is 65501783. The reversal of 65501768 is 86710556.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65501753) and next prime (65501783).

It can be written as a sum of positive squares in only one way, i.e., 61183684 + 4318084 = 7822^2 + 2078^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×65501768² = 8580963222251648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4093853 + ... + 4093868.

Almost surely, 2^65501768 is an apocalyptic number.

It is an amenable number.

65501768 is a deficient number, since it is larger than the sum of its proper divisors (57314062).

65501768 is a wasteful number, since it uses less digits than its factorization.

65501768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8187727 (or 8187723 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 65501768 is about 8093.3162547870. The cubic root of 65501768 is about 403.1045257955.

The spelling of 65501768 in words is "sixty-five million, five hundred one thousand, seven hundred sixty-eight".