65673641 has 8 divisors (see below), whose sum is σ = 71820000. Its totient is φ = 59556640.

The previous prime is 65673623. The next prime is 65673649. The reversal of 65673641 is 14637656.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65673641 - 2⁶ = 65673577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65673595 and 65673604.

It is not an unprimeable number, because it can be changed into a prime (65673649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2516 + ... + 11733.

It is an arithmetic number, because the mean of its divisors is an integer number (8977500).

Almost surely, 2^65673641 is an apocalyptic number.

It is an amenable number.

65673641 is a deficient number, since it is larger than the sum of its proper divisors (6146359).

65673641 is a wasteful number, since it uses less digits than its factorization.

65673641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14679.

The product of its digits is 90720, while the sum is 38.

The square root of 65673641 is about 8103.9275046116. The cubic root of 65673641 is about 403.4567924920.

The spelling of 65673641 in words is "sixty-five million, six hundred seventy-three thousand, six hundred forty-one".