678732912 has 160 divisors (see below), whose sum is σ = 2289020160. Its totient is φ = 189838080.

The previous prime is 678732911. The next prime is 678732913. The reversal of 678732912 is 219237876.

It is an interprime number because it is at equal distance from previous prime (678732911) and next prime (678732913).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678732911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56283 + ... + 67269.

It is an arithmetic number, because the mean of its divisors is an integer number (14306376).

Almost surely, 2^678732912 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 678732912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1144510080).

678732912 is an abundant number, since it is smaller than the sum of its proper divisors (1610287248).

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

678732912 is a wasteful number, since it uses less digits than its factorization.

678732912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11028 (or 11016 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 678732912 is about 26052.5029891563. The cubic root of 678732912 is about 878.8194016791.

The spelling of 678732912 in words is "six hundred seventy-eight million, seven hundred thirty-two thousand, nine hundred twelve".