1069878681 has 9 divisors (see below), whose sum is σ = 1545522069. Its totient is φ = 713187036.

The previous prime is 1069878679. The next prime is 1069878707. The reversal of 1069878681 is 1868789601.

The square root of 1069878681 is 32709.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1069878681 - 2¹ = 1069878679 is a prime.

It is a super-2 number, since 2×1069878681² = 2289280784116599522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1069878631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 92676 + ... + 103578.

Almost surely, 2^1069878681 is an apocalyptic number.

1069878681 is the 32709-th square number.

1069878681 is the 16355-th centered octagonal number.

It is an amenable number.

1069878681 is a deficient number, since it is larger than the sum of its proper divisors (475643388).

1069878681 is an frugal number, since it uses more digits than its factorization.

1069878681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21812 (or 10906 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The cubic root of 1069878681 is about 1022.7704641778.

The spelling of 1069878681 in words is "one billion, sixty-nine million, eight hundred seventy-eight thousand, six hundred eighty-one".