6695120879 has 4 divisors (see below), whose sum is σ = 6695806584. Its totient is φ = 6694435176.

The previous prime is 6695120851. The next prime is 6695120891. The reversal of 6695120879 is 9780215966.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6695120879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6695120879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6695120279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327992 + ... + 347805.

It is an arithmetic number, because the mean of its divisors is an integer number (1673951646).

Almost surely, 2^6695120879 is an apocalyptic number.

6695120879 is a deficient number, since it is larger than the sum of its proper divisors (685705).

6695120879 is an equidigital number, since it uses as much as digits as its factorization.

6695120879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685704.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 6695120879 is about 81823.7183156571. The cubic root of 6695120879 is about 1884.7459011550.

The spelling of 6695120879 in words is "six billion, six hundred ninety-five million, one hundred twenty thousand, eight hundred seventy-nine".