678081000 has 64 divisors (see below), whose sum is σ = 2115622080. Its totient is φ = 180820800.

The previous prime is 678080999. The next prime is 678081017. The reversal of 678081000 is 180876.

It is a super-2 number, since 2×678081000² = 919587685122000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110014 + ... + 116013.

It is an arithmetic number, because the mean of its divisors is an integer number (33056595).

Almost surely, 2^678081000 is an apocalyptic number.

678081000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

678081000 is an abundant number, since it is smaller than the sum of its proper divisors (1437541080).

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

678081000 is a wasteful number, since it uses less digits than its factorization.

678081000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226051 (or 226037 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 678081000 is about 26039.9884792601. The cubic root of 678081000 is about 878.5379476019.

The spelling of 678081000 in words is "six hundred seventy-eight million, eighty-one thousand".