678908948 has 6 divisors (see below), whose sum is σ = 1188090666. Its totient is φ = 339454472.

The previous prime is 678908911. The next prime is 678908953. The reversal of 678908948 is 849809876.

It can be written as a sum of positive squares in only one way, i.e., 579268624 + 99640324 = 24068^2 + 9982^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84863615 + ... + 84863622.

It is an arithmetic number, because the mean of its divisors is an integer number (198015111).

Almost surely, 2^678908948 is an apocalyptic number.

It is an amenable number.

678908948 is a deficient number, since it is larger than the sum of its proper divisors (509181718).

678908948 is a wasteful number, since it uses less digits than its factorization.

678908948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169727241 (or 169727239 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 59.

The square root of 678908948 is about 26055.8812554863. The cubic root of 678908948 is about 878.8953719057.

The spelling of 678908948 in words is "six hundred seventy-eight million, nine hundred eight thousand, nine hundred forty-eight".