678093660 has 384 divisors, whose sum is σ = 2395008000. Its totient is φ = 158505984.

The previous prime is 678093643. The next prime is 678093673. The reversal of 678093660 is 66390876.

678093660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×678093660² = 919622023464391200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12794194 + ... + 12794246.

It is an arithmetic number, because the mean of its divisors is an integer number (6237000).

Almost surely, 2^678093660 is an apocalyptic number.

678093660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678093660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1197504000).

678093660 is an abundant number, since it is smaller than the sum of its proper divisors (1716914340).

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

678093660 is a wasteful number, since it uses less digits than its factorization.

678093660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 678093660 is about 26040.2315657907. The cubic root of 678093660 is about 878.5434151007.

The spelling of 678093660 in words is "six hundred seventy-eight million, ninety-three thousand, six hundred sixty".