654623273 has 2 divisors, whose sum is σ = 654623274. Its totient is φ = 654623272.

The previous prime is 654623257. The next prime is 654623279. The reversal of 654623273 is 372326456.

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., 514745344 + 139877929 = 22688^2 + 11827^2 .

It is a cyclic number.

It is not a de Polignac number, because 654623273 - 2⁴ = 654623257 is a prime.

It is a super-3 number, since 3×654623273³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (654623279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327311636 + 327311637.

It is an arithmetic number, because the mean of its divisors is an integer number (327311637).

Almost surely, 2^654623273 is an apocalyptic number.

It is an amenable number.

654623273 is a deficient number, since it is larger than the sum of its proper divisors (1).

654623273 is an equidigital number, since it uses as much as digits as its factorization.

654623273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 38.

The square root of 654623273 is about 25585.6067545798. The cubic root of 654623273 is about 868.2880294698.

The spelling of 654623273 in words is "six hundred fifty-four million, six hundred twenty-three thousand, two hundred seventy-three".