1061636688 has 120 divisors (see below), whose sum is σ = 3422701568. Its totient is φ = 300900096.

The previous prime is 1061636687. The next prime is 1061636713. The reversal of 1061636688 is 8866361601.

1061636688 is a `hidden beast` number, since 1 + 0 + 6 + 1 + 636 + 6 + 8 + 8 = 666.

1061636688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1061636688² = 2254144914615218688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061636683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123870 + ... + 132162.

Almost surely, 2^1061636688 is an apocalyptic number.

1061636688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1061636688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1711350784).

1061636688 is an abundant number, since it is smaller than the sum of its proper divisors (2361064880).

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

1061636688 is a wasteful number, since it uses less digits than its factorization.

1061636688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8441 (or 8432 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1061636688 is about 32582.7667333515. The cubic root of 1061636688 is about 1020.1373286840.

The spelling of 1061636688 in words is "one billion, sixty-one million, six hundred thirty-six thousand, six hundred eighty-eight".