678837407716 has 24 divisors (see below), whose sum is σ = 1279371685760. Its totient is φ = 313303630752.

The previous prime is 678837407711. The next prime is 678837407849. The reversal of 678837407716 is 617704738876.

It is a super-2 number, since 2×678837407716² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (678837407711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3873925 + ... + 4045363.

Almost surely, 2^678837407716 is an apocalyptic number.

It is an amenable number.

678837407716 is a deficient number, since it is larger than the sum of its proper divisors (600534278044).

678837407716 is a wasteful number, since it uses less digits than its factorization.

678837407716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247603 (or 247601 counting only the distinct ones).

The product of its (nonzero) digits is 66382848, while the sum is 64.

The spelling of 678837407716 in words is "six hundred seventy-eight billion, eight hundred thirty-seven million, four hundred seven thousand, seven hundred sixteen".