659473987 has 2 divisors, whose sum is σ = 659473988. Its totient is φ = 659473986.

The previous prime is 659473981. The next prime is 659474027. The reversal of 659473987 is 789374956.

659473987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-659473987 is a prime.

It is not a weakly prime, because it can be changed into another prime (659473981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329736993 + 329736994.

It is an arithmetic number, because the mean of its divisors is an integer number (329736994).

Almost surely, 2^659473987 is an apocalyptic number.

659473987 is a deficient number, since it is larger than the sum of its proper divisors (1).

659473987 is an equidigital number, since it uses as much as digits as its factorization.

659473987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 58.

The square root of 659473987 is about 25680.2256025916. The cubic root of 659473987 is about 870.4274057068.

The spelling of 659473987 in words is "six hundred fifty-nine million, four hundred seventy-three thousand, nine hundred eighty-seven".