5578395685 has 4 divisors (see below), whose sum is σ = 6694074828. Its totient is φ = 4462716544.

The previous prime is 5578395587. The next prime is 5578395727. The reversal of 5578395685 is 5865938755.

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 1222131681 + 4356264004 = 34959^2 + 66002^2 .

It is a cyclic number.

It is not a de Polignac number, because 5578395685 - 2¹⁵ = 5578362917 is a prime.

It is a super-2 number, since 2×5578395685² = 62236996836853238450, which contains 22 as substring.

It is a Duffinian number.

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, 557839564 + ... + 557839573.

It is an arithmetic number, because the mean of its divisors is an integer number (1673518707).

Almost surely, 2^5578395685 is an apocalyptic number.

It is an amenable number.

5578395685 is a deficient number, since it is larger than the sum of its proper divisors (1115679143).

5578395685 is a wasteful number, since it uses less digits than its factorization.

5578395685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115679142.

The product of its digits is 45360000, while the sum is 61.

The square root of 5578395685 is about 74688.6583424820. The cubic root of 5578395685 is about 1773.5214226559.

The spelling of 5578395685 in words is "five billion, five hundred seventy-eight million, three hundred ninety-five thousand, six hundred eighty-five".