6599973965 has 16 divisors (see below), whose sum is σ = 8542195200. Its totient is φ = 4866399552.

The previous prime is 6599973907. The next prime is 6599974001. The reversal of 6599973965 is 5693799956.

It is a cyclic number.

It is not a de Polignac number, because 6599973965 - 2²⁴ = 6583196749 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6599973895 and 6599973904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34205 + ... + 119874.

It is an arithmetic number, because the mean of its divisors is an integer number (533887200).

Almost surely, 2^6599973965 is an apocalyptic number.

6599973965 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6599973965 is a deficient number, since it is larger than the sum of its proper divisors (1942221235).

6599973965 is a wasteful number, since it uses less digits than its factorization.

6599973965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154756.

The product of its digits is 124002900, while the sum is 68.

The square root of 6599973965 is about 81240.2238118532. The cubic root of 6599973965 is about 1875.7749889058.

The spelling of 6599973965 in words is "six billion, five hundred ninety-nine million, nine hundred seventy-three thousand, nine hundred sixty-five".