6973784065 has 4 divisors (see below), whose sum is σ = 8368540884. Its totient is φ = 5579027248.

The previous prime is 6973784053. The next prime is 6973784093. The reversal of 6973784065 is 5604873796.

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 721244736 + 6252539329 = 26856^2 + 79073^2 .

It is a cyclic number.

It is not a de Polignac number, because 6973784065 - 2¹¹ = 6973782017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6973783997 and 6973784015.

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, 697378402 + ... + 697378411.

It is an arithmetic number, because the mean of its divisors is an integer number (2092135221).

Almost surely, 2^6973784065 is an apocalyptic number.

It is an amenable number.

6973784065 is a deficient number, since it is larger than the sum of its proper divisors (1394756819).

6973784065 is a wasteful number, since it uses less digits than its factorization.

6973784065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394756818.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The square root of 6973784065 is about 83509.1855127327. The cubic root of 6973784065 is about 1910.5401344209.

The spelling of 6973784065 in words is "six billion, nine hundred seventy-three million, seven hundred eighty-four thousand, sixty-five".