6845208577 has 4 divisors (see below), whose sum is σ = 6846786900. Its totient is φ = 6843630256.

The previous prime is 6845208563. The next prime is 6845208581. The reversal of 6845208577 is 7758025486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7758025486 = 2 ⋅3879012743.

It can be written as a sum of positive squares in 2 ways, for example, as 1425893121 + 5419315456 = 37761^2 + 73616^2 .

It is a cyclic number.

It is not a de Polignac number, because 6845208577 - 2⁷ = 6845208449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6845208277) 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, 782638 + ... + 791335.

It is an arithmetic number, because the mean of its divisors is an integer number (1711696725).

Almost surely, 2^6845208577 is an apocalyptic number.

It is an amenable number.

6845208577 is a deficient number, since it is larger than the sum of its proper divisors (1578323).

6845208577 is a wasteful number, since it uses less digits than its factorization.

6845208577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578322.

The product of its (nonzero) digits is 3763200, while the sum is 52.

The square root of 6845208577 is about 82735.7756777562. The cubic root of 6845208577 is about 1898.7256992768.

The spelling of 6845208577 in words is "six billion, eight hundred forty-five million, two hundred eight thousand, five hundred seventy-seven".