5306778644 has 12 divisors (see below), whose sum is σ = 9319680384. Its totient is φ = 2644012824.

The previous prime is 5306778637. The next prime is 5306778671. The reversal of 5306778644 is 4468776035.

It is a junction number, because it is equal to n+sod(n) for n = 5306778592 and 5306778601.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342852 + ... + 2345115.

It is an arithmetic number, because the mean of its divisors is an integer number (776640032).

Almost surely, 2^5306778644 is an apocalyptic number.

It is an amenable number.

5306778644 is a deficient number, since it is larger than the sum of its proper divisors (4012901740).

5306778644 is a wasteful number, since it uses less digits than its factorization.

5306778644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688254 (or 4688252 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 50.

The square root of 5306778644 is about 72847.6399343177. The cubic root of 5306778644 is about 1744.2563963335.

The spelling of 5306778644 in words is "five billion, three hundred six million, seven hundred seventy-eight thousand, six hundred forty-four".