678469632 has 112 divisors (see below), whose sum is σ = 1905670560. Its totient is φ = 214106112.

The previous prime is 678469619. The next prime is 678469637. The reversal of 678469632 is 236964876.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (678469637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466218 + ... + 467670.

Almost surely, 2^678469632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678469632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952835280).

678469632 is an abundant number, since it is smaller than the sum of its proper divisors (1227200928).

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

678469632 is a wasteful number, since it uses less digits than its factorization.

678469632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501 (or 1477 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 51.

The square root of 678469632 is about 26047.4496256351. The cubic root of 678469632 is about 878.7057558491.

The spelling of 678469632 in words is "six hundred seventy-eight million, four hundred sixty-nine thousand, six hundred thirty-two".