655597 has 2 divisors, whose sum is σ = 655598. Its totient is φ = 655596.

The previous prime is 655583. The next prime is 655601. The reversal of 655597 is 795556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335241 + 320356 = 579^2 + 566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327798 + 327799.

It is an arithmetic number, because the mean of its divisors is an integer number (327799).

2⁶⁵⁵⁵⁹⁷ is an apocalyptic number.

It is an amenable number.

655597 is a deficient number, since it is larger than the sum of its proper divisors (1).

655597 is an equidigital number, since it uses as much as digits as its factorization.

655597 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 655597 is about 809.6894466399. The cubic root of 655597 is about 86.8718331230.

The spelling of 655597 in words is "six hundred fifty-five thousand, five hundred ninety-seven".