655579 has 2 divisors, whose sum is σ = 655580. Its totient is φ = 655578.

The previous prime is 655561. The next prime is 655583. The reversal of 655579 is 975556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 655579 - 2⁵ = 655547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (655559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327789 + 327790.

It is an arithmetic number, because the mean of its divisors is an integer number (327790).

2⁶⁵⁵⁵⁷⁹ is an apocalyptic number.

655579 is a deficient number, since it is larger than the sum of its proper divisors (1).

655579 is an equidigital number, since it uses as much as digits as its factorization.

655579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47250, while the sum is 37.

The square root of 655579 is about 809.6783311909. The cubic root of 655579 is about 86.8710380679.

The spelling of 655579 in words is "six hundred fifty-five thousand, five hundred seventy-nine".