654697 has 2 divisors, whose sum is σ = 654698. Its totient is φ = 654696.

The previous prime is 654679. The next prime is 654701. The reversal of 654697 is 796456.

Together with previous prime (654679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 646416 + 8281 = 804^2 + 91^2 .

It is a cyclic number.

It is not a de Polignac number, because 654697 - 2¹⁹ = 130409 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (654397) 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, 327348 + 327349.

It is an arithmetic number, because the mean of its divisors is an integer number (327349).

2⁶⁵⁴⁶⁹⁷ is an apocalyptic number.

654697 is the 433-rd centered heptagonal number.

It is an amenable number.

654697 is a deficient number, since it is larger than the sum of its proper divisors (1).

654697 is an equidigital number, since it uses as much as digits as its factorization.

654697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 654697 is about 809.1334871330. The cubic root of 654697 is about 86.8320625250.

The spelling of 654697 in words is "six hundred fifty-four thousand, six hundred ninety-seven".