678380 has 24 divisors (see below), whose sum is σ = 1442448. Its totient is φ = 267968.

The previous prime is 678371. The next prime is 678383. The reversal of 678380 is 83876.

It is not an unprimeable number, because it can be changed into a prime (678383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1982 + ... + 2298.

It is an arithmetic number, because the mean of its divisors is an integer number (60102).

2⁶⁷⁸³⁸⁰ is an apocalyptic number.

It is an amenable number.

678380 is an abundant number, since it is smaller than the sum of its proper divisors (764068).

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

678380 is a wasteful number, since it uses less digits than its factorization.

678380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 678380 is about 823.6382701162. The cubic root of 678380 is about 87.8667059142.

The spelling of 678380 in words is "six hundred seventy-eight thousand, three hundred eighty".