678163660 has 24 divisors (see below), whose sum is σ = 1507917600. Its totient is φ = 255308544.

The previous prime is 678163613. The next prime is 678163667. The reversal of 678163660 is 66361876.

It is not an unprimeable number, because it can be changed into a prime (678163667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996960 + ... + 997639.

It is an arithmetic number, because the mean of its divisors is an integer number (62829900).

Almost surely, 2^678163660 is an apocalyptic number.

It is an amenable number.

678163660 is an abundant number, since it is smaller than the sum of its proper divisors (829753940).

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

678163660 is a wasteful number, since it uses less digits than its factorization.

678163660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994625 (or 1994623 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 678163660 is about 26041.5756051741. The cubic root of 678163660 is about 878.5736449085.

The spelling of 678163660 in words is "six hundred seventy-eight million, one hundred sixty-three thousand, six hundred sixty".