654917 has 2 divisors, whose sum is σ = 654918. Its totient is φ = 654916.

The previous prime is 654889. The next prime is 654923. The reversal of 654917 is 719456.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410881 + 244036 = 641^2 + 494^2 .

It is a cyclic number.

It is not a de Polignac number, because 654917 - 2⁶ = 654853 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654917.

It is not a weakly prime, because it can be changed into another prime (654967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327458 + 327459.

It is an arithmetic number, because the mean of its divisors is an integer number (327459).

2⁶⁵⁴⁹¹⁷ is an apocalyptic number.

It is an amenable number.

654917 is a deficient number, since it is larger than the sum of its proper divisors (1).

654917 is an equidigital number, since it uses as much as digits as its factorization.

654917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 654917 is about 809.2694236161. The cubic root of 654917 is about 86.8417875909.

The spelling of 654917 in words is "six hundred fifty-four thousand, nine hundred seventeen".