678514842 has 24 divisors (see below), whose sum is σ = 1501396416. Its totient is φ = 221359176.

The previous prime is 678514817. The next prime is 678514847. The reversal of 678514842 is 248415876.

It is not an unprimeable number, because it can be changed into a prime (678514847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400168 + ... + 401859.

It is an arithmetic number, because the mean of its divisors is an integer number (62558184).

Almost surely, 2^678514842 is an apocalyptic number.

678514842 is an abundant number, since it is smaller than the sum of its proper divisors (822881574).

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

678514842 is a wasteful number, since it uses less digits than its factorization.

678514842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802082 (or 802079 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 678514842 is about 26048.3174504612. The cubic root of 678514842 is about 878.7252730110.

The spelling of 678514842 in words is "six hundred seventy-eight million, five hundred fourteen thousand, eight hundred forty-two".