1228027687 has 2 divisors, whose sum is σ = 1228027688. Its totient is φ = 1228027686.

The previous prime is 1228027639. The next prime is 1228027693. The reversal of 1228027687 is 7867208221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1228027687 - 2¹¹ = 1228025639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228027187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614013843 + 614013844.

It is an arithmetic number, because the mean of its divisors is an integer number (614013844).

Almost surely, 2^1228027687 is an apocalyptic number.

1228027687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228027687 is an equidigital number, since it uses as much as digits as its factorization.

1228027687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 1228027687 is about 35043.2259787823. The cubic root of 1228027687 is about 1070.8682756334.

The spelling of 1228027687 in words is "one billion, two hundred twenty-eight million, twenty-seven thousand, six hundred eighty-seven".