1078687568 has 30 divisors (see below), whose sum is σ = 2431176426. Its totient is φ = 462294336.

The previous prime is 1078687541. The next prime is 1078687591. The reversal of 1078687568 is 8657868701.

It can be written as a sum of positive squares in only one way, i.e., 1038643984 + 40043584 = 32228^2 + 6328^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

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 in 5 ways as a sum of consecutive naturals, for example, 687155 + ... + 688722.

Almost surely, 2^1078687568 is an apocalyptic number.

It is an amenable number.

1078687568 is an abundant number, since it is smaller than the sum of its proper divisors (1352488858).

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

1078687568 is a wasteful number, since it uses less digits than its factorization.

1078687568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375899 (or 1375886 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 56.

The square root of 1078687568 is about 32843.3793632750. The cubic root of 1078687568 is about 1025.5698019248.

The spelling of 1078687568 in words is "one billion, seventy-eight million, six hundred eighty-seven thousand, five hundred sixty-eight".