2689530887 has 2 divisors, whose sum is σ = 2689530888. Its totient is φ = 2689530886.

The previous prime is 2689530881. The next prime is 2689530923. The reversal of 2689530887 is 7880359862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2689530887 - 2⁸ = 2689530631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2689530881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344765443 + 1344765444.

It is an arithmetic number, because the mean of its divisors is an integer number (1344765444).

Almost surely, 2^2689530887 is an apocalyptic number.

2689530887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2689530887 is an equidigital number, since it uses as much as digits as its factorization.

2689530887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The square root of 2689530887 is about 51860.6872977981. The cubic root of 2689530887 is about 1390.6745663918.

The spelling of 2689530887 in words is "two billion, six hundred eighty-nine million, five hundred thirty thousand, eight hundred eighty-seven".