678003172 has 72 divisors (see below), whose sum is σ = 1497763008. Its totient is φ = 262870080.

The previous prime is 678003169. The next prime is 678003191. The reversal of 678003172 is 271300876.

It is a super-3 number, since 3×678003172³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 992343 + ... + 993025.

It is an arithmetic number, because the mean of its divisors is an integer number (20802264).

Almost surely, 2^678003172 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 678003172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748881504).

678003172 is an abundant number, since it is smaller than the sum of its proper divisors (819759836).

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

678003172 is a wasteful number, since it uses less digits than its factorization.

678003172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 678003172 is about 26038.4940424749. The cubic root of 678003172 is about 878.5043343769.

The spelling of 678003172 in words is "six hundred seventy-eight million, three thousand, one hundred seventy-two".