678071080 has 32 divisors (see below), whose sum is σ = 1528635240. Its totient is φ = 270699520.

The previous prime is 678071039. The next prime is 678071081. The reversal of 678071080 is 80170876.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 236482884 + 441588196 = 15378^2 + 21014^2 .

It is not an unprimeable number, because it can be changed into a prime (678071081) 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, 4572 + ... + 37108.

Almost surely, 2^678071080 is an apocalyptic number.

It is an amenable number.

678071080 is an abundant number, since it is smaller than the sum of its proper divisors (850564160).

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

678071080 is a wasteful number, since it uses less digits than its factorization.

678071080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33069 (or 33065 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 678071080 is about 26039.7980022887. The cubic root of 678071080 is about 878.5336633846.

The spelling of 678071080 in words is "six hundred seventy-eight million, seventy-one thousand, eighty".