5578894865 has 8 divisors (see below), whose sum is σ = 6925524840. Its totient is φ = 4309215232.

The previous prime is 5578894847. The next prime is 5578894889. The reversal of 5578894865 is 5684988755.

It is a Cunningham number, because it is equal to 74692²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 5578894864 = 1^2 + 74692^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5578894865 - 2⁸ = 5578894609 is a prime.

It is a super-2 number, since 2×5578894865² = 62248135829446736450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19237424 + ... + 19237713.

It is an arithmetic number, because the mean of its divisors is an integer number (865690605).

Almost surely, 2^5578894865 is an apocalyptic number.

It is an amenable number.

5578894865 is a deficient number, since it is larger than the sum of its proper divisors (1346629975).

5578894865 is a wasteful number, since it uses less digits than its factorization.

5578894865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38475171.

The product of its digits is 96768000, while the sum is 65.

The square root of 5578894865 is about 74692.0000066942. Note that the first 5 decimals coincide. The cubic root of 5578894865 is about 1773.5743219760.

The spelling of 5578894865 in words is "five billion, five hundred seventy-eight million, eight hundred ninety-four thousand, eight hundred sixty-five".