56487001687 has 2 divisors, whose sum is σ = 56487001688. Its totient is φ = 56487001686.

The previous prime is 56487001679. The next prime is 56487001699. The reversal of 56487001687 is 78610078465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56487001687 - 2³ = 56487001679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56487001667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28243500843 + 28243500844.

It is an arithmetic number, because the mean of its divisors is an integer number (28243500844).

Almost surely, 2^56487001687 is an apocalyptic number.

56487001687 is a deficient number, since it is larger than the sum of its proper divisors (1).

56487001687 is an equidigital number, since it uses as much as digits as its factorization.

56487001687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 56487001687 in words is "fifty-six billion, four hundred eighty-seven million, one thousand, six hundred eighty-seven".