6779078573 has 4 divisors (see below), whose sum is σ = 6779555868. Its totient is φ = 6778601280.

The previous prime is 6779078567. The next prime is 6779078587. The reversal of 6779078573 is 3758709776.

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 6247637764 + 531440809 = 79042^2 + 23053^2 .

It is a cyclic number.

It is not a de Polignac number, because 6779078573 - 2¹⁰ = 6779077549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779078563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216668 + ... + 245973.

It is an arithmetic number, because the mean of its divisors is an integer number (1694888967).

Almost surely, 2^6779078573 is an apocalyptic number.

It is an amenable number.

6779078573 is a deficient number, since it is larger than the sum of its proper divisors (477295).

6779078573 is a wasteful number, since it uses less digits than its factorization.

6779078573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477294.

The product of its (nonzero) digits is 15558480, while the sum is 59.

The square root of 6779078573 is about 82335.1600047027. The cubic root of 6779078573 is about 1892.5915172302.

The spelling of 6779078573 in words is "six billion, seven hundred seventy-nine million, seventy-eight thousand, five hundred seventy-three".