65165648 has 10 divisors (see below), whose sum is σ = 126258474. Its totient is φ = 32582816.

The previous prime is 65165623. The next prime is 65165651. The reversal of 65165648 is 84656156.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 65157184 + 8464 = 8072^2 + 92^2 .

It is a super-3 number, since 3×65165648³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2036411 + ... + 2036442.

Almost surely, 2^65165648 is an apocalyptic number.

It is an amenable number.

65165648 is a deficient number, since it is larger than the sum of its proper divisors (61092826).

65165648 is a wasteful number, since it uses less digits than its factorization.

65165648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4072861 (or 4072855 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 65165648 is about 8072.5242644417. The cubic root of 65165648 is about 402.4138375036.

It can be divided in two parts, 65 and 165648, that multiplied together give a triangular number (10767120 = T₄₆₄₀).

The spelling of 65165648 in words is "sixty-five million, one hundred sixty-five thousand, six hundred forty-eight".