65441864 has 32 divisors (see below), whose sum is σ = 127483200. Its totient is φ = 31456320.

The previous prime is 65441851. The next prime is 65441869. The reversal of 65441864 is 46814456.

It is a super-3 number, since 3×65441864³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (65441869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71699 + ... + 72605.

It is an arithmetic number, because the mean of its divisors is an integer number (3983850).

Almost surely, 2^65441864 is an apocalyptic number.

It is an amenable number.

65441864 is a deficient number, since it is larger than the sum of its proper divisors (62041336).

65441864 is a wasteful number, since it uses less digits than its factorization.

65441864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253 (or 1249 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 65441864 is about 8089.6145767274. The cubic root of 65441864 is about 402.9816032175.

The spelling of 65441864 in words is "sixty-five million, four hundred forty-one thousand, eight hundred sixty-four".