678088 has 8 divisors (see below), whose sum is σ = 1271430. Its totient is φ = 339040.

The previous prime is 678077. The next prime is 678101. The reversal of 678088 is 880876.

It can be written as a sum of positive squares in only one way, i.e., 611524 + 66564 = 782^2 + 258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42373 + ... + 42388.

2⁶⁷⁸⁰⁸⁸ is an apocalyptic number.

It is an amenable number.

678088 is a deficient number, since it is larger than the sum of its proper divisors (593342).

678088 is a wasteful number, since it uses less digits than its factorization.

678088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84767 (or 84763 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 678088 is about 823.4609887542. The cubic root of 678088 is about 87.8540970714.

The spelling of 678088 in words is "six hundred seventy-eight thousand, eighty-eight".