65673287824 has 15 divisors (see below), whose sum is σ = 127243981267. Its totient is φ = 32836131376.

The previous prime is 65673287821. The next prime is 65673287831. The reversal of 65673287824 is 42878237656.

It is a happy number.

The square root of 65673287824 is 256268.

It is a perfect power (a square), and thus also a powerful number.

65673287824 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65673287824² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65673287821) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 993039 + ... + 1057105.

Almost surely, 2^65673287824 is an apocalyptic number.

65673287824 is the 256268-th square number.

It is an amenable number.

65673287824 is a deficient number, since it is larger than the sum of its proper divisors (61570693443).

65673287824 is an frugal number, since it uses more digits than its factorization.

65673287824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128142 (or 64069 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 58.

The spelling of 65673287824 in words is "sixty-five billion, six hundred seventy-three million, two hundred eighty-seven thousand, eight hundred twenty-four".