659493481 has 2 divisors, whose sum is σ = 659493482. Its totient is φ = 659493480.

The previous prime is 659493463. The next prime is 659493547. The reversal of 659493481 is 184394956.

It is a happy number.

659493481 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 can be written as a sum of positive squares in only one way, i.e., 375739456 + 283754025 = 19384^2 + 16845^2 .

It is a cyclic number.

It is not a de Polignac number, because 659493481 - 2⁵ = 659493449 is a prime.

It is a super-2 number, since 2×659493481² = 869863302962994722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (659493181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329746740 + 329746741.

It is an arithmetic number, because the mean of its divisors is an integer number (329746741).

Almost surely, 2^659493481 is an apocalyptic number.

It is an amenable number.

659493481 is a deficient number, since it is larger than the sum of its proper divisors (1).

659493481 is an equidigital number, since it uses as much as digits as its factorization.

659493481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The square root of 659493481 is about 25680.6051525271. The cubic root of 659493481 is about 870.4359822112.

The spelling of 659493481 in words is "six hundred fifty-nine million, four hundred ninety-three thousand, four hundred eighty-one".