8673437665 has 4 divisors (see below), whose sum is σ = 10408125204. Its totient is φ = 6938750128.

The previous prime is 8673437639. The next prime is 8673437687. The reversal of 8673437665 is 5667343768.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5722014736 + 2951422929 = 75644^2 + 54327^2 .

It is a cyclic number.

It is not a de Polignac number, because 8673437665 - 2¹³ = 8673429473 is a prime.

It is a super-4 number, since 4×8673437665⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867343762 + ... + 867343771.

It is an arithmetic number, because the mean of its divisors is an integer number (2602031301).

Almost surely, 2^8673437665 is an apocalyptic number.

It is an amenable number.

8673437665 is a deficient number, since it is larger than the sum of its proper divisors (1734687539).

8673437665 is a wasteful number, since it uses less digits than its factorization.

8673437665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734687538.

The product of its digits is 15240960, while the sum is 55.

The square root of 8673437665 is about 93131.2926196131. The cubic root of 8673437665 is about 2054.6148397171.

The spelling of 8673437665 in words is "eight billion, six hundred seventy-three million, four hundred thirty-seven thousand, six hundred sixty-five".