654381173 has 4 divisors (see below), whose sum is σ = 660384780. Its totient is φ = 648377568.

The previous prime is 654381113. The next prime is 654381179. The reversal of 654381173 is 371183456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 295771204 + 358609969 = 17198^2 + 18937^2 .

It is a cyclic number.

It is not a de Polignac number, because 654381173 - 2⁸ = 654380917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654381179) 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 in 3 ways as a sum of consecutive naturals, for example, 3001640 + ... + 3001857.

It is an arithmetic number, because the mean of its divisors is an integer number (165096195).

Almost surely, 2^654381173 is an apocalyptic number.

It is an amenable number.

654381173 is a deficient number, since it is larger than the sum of its proper divisors (6003607).

654381173 is a wasteful number, since it uses less digits than its factorization.

654381173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003606.

The product of its digits is 60480, while the sum is 38.

The square root of 654381173 is about 25580.8751414020. The cubic root of 654381173 is about 868.1809763191.

The spelling of 654381173 in words is "six hundred fifty-four million, three hundred eighty-one thousand, one hundred seventy-three".