27768487 has 2 divisors, whose sum is σ = 27768488. Its totient is φ = 27768486.

The previous prime is 27768427. The next prime is 27768523. The reversal of 27768487 is 78486772.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27768487 - 2¹¹ = 27766439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27768487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27768407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13884243 + 13884244.

It is an arithmetic number, because the mean of its divisors is an integer number (13884244).

Almost surely, 2^27768487 is an apocalyptic number.

27768487 is a deficient number, since it is larger than the sum of its proper divisors (1).

27768487 is an equidigital number, since it uses as much as digits as its factorization.

27768487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1053696, while the sum is 49.

The square root of 27768487 is about 5269.5812926645. The cubic root of 27768487 is about 302.8196634463.

The spelling of 27768487 in words is "twenty-seven million, seven hundred sixty-eight thousand, four hundred eighty-seven".