68630687 has 2 divisors, whose sum is σ = 68630688. Its totient is φ = 68630686.

The previous prime is 68630633. The next prime is 68630729. The reversal of 68630687 is 78603686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68630687 - 2¹⁴ = 68614303 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68630087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34315343 + 34315344.

It is an arithmetic number, because the mean of its divisors is an integer number (34315344).

Almost surely, 2^68630687 is an apocalyptic number.

68630687 is a deficient number, since it is larger than the sum of its proper divisors (1).

68630687 is an equidigital number, since it uses as much as digits as its factorization.

68630687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 68630687 is about 8284.3640069712. The cubic root of 68630687 is about 409.4235146124.

The spelling of 68630687 in words is "sixty-eight million, six hundred thirty thousand, six hundred eighty-seven".