654397 has 2 divisors, whose sum is σ = 654398. Its totient is φ = 654396.

The previous prime is 654371. The next prime is 654413. The reversal of 654397 is 793456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 649636 + 4761 = 806^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 654397 - 2¹⁵ = 621629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654307) 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, 327198 + 327199.

It is an arithmetic number, because the mean of its divisors is an integer number (327199).

2⁶⁵⁴³⁹⁷ is an apocalyptic number.

It is an amenable number.

654397 is a deficient number, since it is larger than the sum of its proper divisors (1).

654397 is an equidigital number, since it uses as much as digits as its factorization.

654397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 654397 is about 808.9480823885. The cubic root of 654397 is about 86.8187975598.

The spelling of 654397 in words is "six hundred fifty-four thousand, three hundred ninety-seven".