653659 has 2 divisors, whose sum is σ = 653660. Its totient is φ = 653658.

The previous prime is 653651. The next prime is 653687. The reversal of 653659 is 956356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 653659 - 2³ = 653651 is a prime.

It is not a weakly prime, because it can be changed into another prime (653651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326829 + 326830.

It is an arithmetic number, because the mean of its divisors is an integer number (326830).

2⁶⁵³⁶⁵⁹ is an apocalyptic number.

653659 is a deficient number, since it is larger than the sum of its proper divisors (1).

653659 is an equidigital number, since it uses as much as digits as its factorization.

653659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 34.

The square root of 653659 is about 808.4918057717. The cubic root of 653659 is about 86.7861484831.

The spelling of 653659 in words is "six hundred fifty-three thousand, six hundred fifty-nine".