678971048 has 48 divisors (see below), whose sum is σ = 1483442100. Its totient is φ = 290492160.

The previous prime is 678971011. The next prime is 678971081. The reversal of 678971048 is 840179876.

It can be written as a sum of positive squares in 2 ways, for example, as 522671044 + 156300004 = 22862^2 + 12502^2 .

It is a super-2 number, since 2×678971048² = 922003368044436608, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 678970987 and 678971005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316058 + ... + 318198.

Almost surely, 2^678971048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678971048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741721050).

678971048 is an abundant number, since it is smaller than the sum of its proper divisors (804471052).

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

678971048 is a wasteful number, since it uses less digits than its factorization.

678971048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970 (or 2959 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 678971048 is about 26057.0728977758. The cubic root of 678971048 is about 878.9221686943.

The spelling of 678971048 in words is "six hundred seventy-eight million, nine hundred seventy-one thousand, forty-eight".