705065987 has 2 divisors, whose sum is σ = 705065988. Its totient is φ = 705065986.

The previous prime is 705065983. The next prime is 705066017. The reversal of 705065987 is 789560507.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 705065987 - 2² = 705065983 is a prime.

It is not a weakly prime, because it can be changed into another prime (705065983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352532993 + 352532994.

It is an arithmetic number, because the mean of its divisors is an integer number (352532994).

Almost surely, 2^705065987 is an apocalyptic number.

705065987 is a deficient number, since it is larger than the sum of its proper divisors (1).

705065987 is an equidigital number, since it uses as much as digits as its factorization.

705065987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 705065987 is about 26553.0786727264. The cubic root of 705065987 is about 890.0408124196.

It can be divided in two parts, 7050 and 65987, that added together give a palindrome (73037).

The spelling of 705065987 in words is "seven hundred five million, sixty-five thousand, nine hundred eighty-seven".