5685961987 has 2 divisors, whose sum is σ = 5685961988. Its totient is φ = 5685961986.

The previous prime is 5685961979. The next prime is 5685962003. The reversal of 5685961987 is 7891695865.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5685961987 - 2³ = 5685961979 is a prime.

It is not a weakly prime, because it can be changed into another prime (5685961087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2842980993 + 2842980994.

It is an arithmetic number, because the mean of its divisors is an integer number (2842980994).

Almost surely, 2^5685961987 is an apocalyptic number.

5685961987 is a deficient number, since it is larger than the sum of its proper divisors (1).

5685961987 is an equidigital number, since it uses as much as digits as its factorization.

5685961987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32659200, while the sum is 64.

The square root of 5685961987 is about 75405.3180286377. The cubic root of 5685961987 is about 1784.8483303197.

The spelling of 5685961987 in words is "five billion, six hundred eighty-five million, nine hundred sixty-one thousand, nine hundred eighty-seven".