678491016 has 32 divisors (see below), whose sum is σ = 1938546240. Its totient is φ = 193854528.

The previous prime is 678491003. The next prime is 678491059. The reversal of 678491016 is 610194876.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2019151 + ... + 2019486.

It is an arithmetic number, because the mean of its divisors is an integer number (60579570).

Almost surely, 2^678491016 is an apocalyptic number.

It is an amenable number.

678491016 is an abundant number, since it is smaller than the sum of its proper divisors (1260055224).

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

678491016 is a wasteful number, since it uses less digits than its factorization.

678491016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4038653 (or 4038649 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 678491016 is about 26047.8601040469. The cubic root of 678491016 is about 878.7149874323.

The spelling of 678491016 in words is "six hundred seventy-eight million, four hundred ninety-one thousand, sixteen".