65988673 has 8 divisors (see below), whose sum is σ = 66758400. Its totient is φ = 65223600.

The previous prime is 65988647. The next prime is 65988731. The reversal of 65988673 is 37688956.

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

It is a cyclic number.

It is not a de Polignac number, because 65988673 - 2⁹ = 65988161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65988673.

It is not an unprimeable number, because it can be changed into a prime (65988613) 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, 32848 + ... + 34798.

It is an arithmetic number, because the mean of its divisors is an integer number (8344800).

Almost surely, 2^65988673 is an apocalyptic number.

It is an amenable number.

65988673 is a deficient number, since it is larger than the sum of its proper divisors (769727).

65988673 is a wasteful number, since it uses less digits than its factorization.

65988673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327.

The product of its digits is 2177280, while the sum is 52.

The square root of 65988673 is about 8123.3412460637. The cubic root of 65988673 is about 404.1008819892.

The spelling of 65988673 in words is "sixty-five million, nine hundred eighty-eight thousand, six hundred seventy-three".