659507491 has 2 divisors, whose sum is σ = 659507492. Its totient is φ = 659507490.

The previous prime is 659507467. The next prime is 659507521. The reversal of 659507491 is 194705956.

659507491 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 not a de Polignac number, because 659507491 - 2¹⁵ = 659474723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (659507411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329753745 + 329753746.

It is an arithmetic number, because the mean of its divisors is an integer number (329753746).

Almost surely, 2^659507491 is an apocalyptic number.

659507491 is a deficient number, since it is larger than the sum of its proper divisors (1).

659507491 is an equidigital number, since it uses as much as digits as its factorization.

659507491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 659507491 is about 25680.8779250243. The cubic root of 659507491 is about 870.4421458920.

It can be divided in two parts, 65950 and 7491, that added together give a square (73441 = 271²).

The spelling of 659507491 in words is "six hundred fifty-nine million, five hundred seven thousand, four hundred ninety-one".