5611687805 has 4 divisors (see below), whose sum is σ = 6734025372. Its totient is φ = 4489350240.

The previous prime is 5611687799. The next prime is 5611687819. The reversal of 5611687805 is 5087861165.

It is a happy number.

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 3856161604 + 1755526201 = 62098^2 + 41899^2 .

It is not a de Polignac number, because 5611687805 - 2⁴ = 5611687789 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 5611687805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561168776 + ... + 561168785.

It is an arithmetic number, because the mean of its divisors is an integer number (1683506343).

Almost surely, 2^5611687805 is an apocalyptic number.

It is an amenable number.

5611687805 is a deficient number, since it is larger than the sum of its proper divisors (1122337567).

5611687805 is a wasteful number, since it uses less digits than its factorization.

5611687805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122337566.

The product of its (nonzero) digits is 403200, while the sum is 47.

The square root of 5611687805 is about 74911.1994630976. The cubic root of 5611687805 is about 1777.0425793700.

The spelling of 5611687805 in words is "five billion, six hundred eleven million, six hundred eighty-seven thousand, eight hundred five".