1061636687 has 2 divisors, whose sum is σ = 1061636688. Its totient is φ = 1061636686.

The previous prime is 1061636683. The next prime is 1061636713. The reversal of 1061636687 is 7866361601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1061636687 - 2² = 1061636683 is a prime.

It is a super-2 number, since 2×1061636687² = 2254144910368671938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061636683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530818343 + 530818344.

It is an arithmetic number, because the mean of its divisors is an integer number (530818344).

Almost surely, 2^1061636687 is an apocalyptic number.

1061636687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061636687 is an equidigital number, since it uses as much as digits as its factorization.

1061636687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 1061636687 is about 32582.7667180060. The cubic root of 1061636687 is about 1020.1373283637.

The spelling of 1061636687 in words is "one billion, sixty-one million, six hundred thirty-six thousand, six hundred eighty-seven".