65668532 has 6 divisors (see below), whose sum is σ = 114919938. Its totient is φ = 32834264.

The previous prime is 65668531. The next prime is 65668543. The reversal of 65668532 is 23586656.

65668532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 54081316 + 11587216 = 7354^2 + 3404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65668532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65668531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8208563 + ... + 8208570.

It is an arithmetic number, because the mean of its divisors is an integer number (19153323).

Almost surely, 2^65668532 is an apocalyptic number.

It is an amenable number.

65668532 is a deficient number, since it is larger than the sum of its proper divisors (49251406).

65668532 is a wasteful number, since it uses less digits than its factorization.

65668532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16417137 (or 16417135 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 65668532 is about 8103.6122809522. The cubic root of 65668532 is about 403.4463300793.

The spelling of 65668532 in words is "sixty-five million, six hundred sixty-eight thousand, five hundred thirty-two".