5645784678 has 16 divisors (see below), whose sum is σ = 11885862720. Its totient is φ = 1782879336.

The previous prime is 5645784673. The next prime is 5645784679. The reversal of 5645784678 is 8764875465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645784673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24762100 + ... + 24762327.

It is an arithmetic number, because the mean of its divisors is an integer number (742866420).

Almost surely, 2^5645784678 is an apocalyptic number.

5645784678 is an abundant number, since it is smaller than the sum of its proper divisors (6240078042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5645784678 is a wasteful number, since it uses less digits than its factorization.

5645784678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49524451.

The product of its digits is 45158400, while the sum is 60.

The square root of 5645784678 is about 75138.4367550989. The cubic root of 5645784678 is about 1780.6344451757.

The spelling of 5645784678 in words is "five billion, six hundred forty-five million, seven hundred eighty-four thousand, six hundred seventy-eight".