6765172065 has 48 divisors (see below), whose sum is σ = 11816034048. Its totient is φ = 3580581888.

The previous prime is 6765172061. The next prime is 6765172087. The reversal of 6765172065 is 5602715676.

6765172065 is a `hidden beast` number, since 6 + 76 + 517 + 2 + 0 + 65 = 666.

It is not a de Polignac number, because 6765172065 - 2² = 6765172061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6765172065.

It is not an unprimeable number, because it can be changed into a prime (6765172061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5097432 + ... + 5098758.

It is an arithmetic number, because the mean of its divisors is an integer number (246167376).

Almost surely, 2^6765172065 is an apocalyptic number.

It is an amenable number.

6765172065 is a deficient number, since it is larger than the sum of its proper divisors (5050861983).

6765172065 is a wasteful number, since it uses less digits than its factorization.

6765172065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The square root of 6765172065 is about 82250.6660459355. Note that the first 3 decimals coincide. The cubic root of 6765172065 is about 1891.2964859378.

The spelling of 6765172065 in words is "six billion, seven hundred sixty-five million, one hundred seventy-two thousand, sixty-five".