2691484687 has 2 divisors, whose sum is σ = 2691484688. Its totient is φ = 2691484686.

The previous prime is 2691484651. The next prime is 2691484699. The reversal of 2691484687 is 7864841962.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2691484687 - 2¹⁹ = 2690960399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2691484487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345742343 + 1345742344.

It is an arithmetic number, because the mean of its divisors is an integer number (1345742344).

Almost surely, 2^2691484687 is an apocalyptic number.

2691484687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691484687 is an equidigital number, since it uses as much as digits as its factorization.

2691484687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 55.

The square root of 2691484687 is about 51879.5208825217. The cubic root of 2691484687 is about 1391.0112350533.

The spelling of 2691484687 in words is "two billion, six hundred ninety-one million, four hundred eighty-four thousand, six hundred eighty-seven".