6661790795 has 16 divisors (see below), whose sum is σ = 8727095520. Its totient is φ = 4841491200.

The previous prime is 6661790791. The next prime is 6661790819. The reversal of 6661790795 is 5970971666.

It is not a de Polignac number, because 6661790795 - 2² = 6661790791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6661790795.

It is not an unprimeable number, because it can be changed into a prime (6661790791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36215 + ... + 120975.

It is an arithmetic number, because the mean of its divisors is an integer number (545443470).

Almost surely, 2^6661790795 is an apocalyptic number.

6661790795 is a deficient number, since it is larger than the sum of its proper divisors (2065304725).

6661790795 is a wasteful number, since it uses less digits than its factorization.

6661790795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86206.

The product of its (nonzero) digits is 4286520, while the sum is 56.

The square root of 6661790795 is about 81619.7941372067. The cubic root of 6661790795 is about 1881.6131087640.

The spelling of 6661790795 in words is "six billion, six hundred sixty-one million, seven hundred ninety thousand, seven hundred ninety-five".