654706 has 16 divisors (see below), whose sum is σ = 1071000. Its totient is φ = 300144.

The previous prime is 654701. The next prime is 654727. The reversal of 654706 is 607456.

It can be written as a sum of positive squares in 4 ways, for example, as 225 + 654481 = 15^2 + 809^2 .

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (654701) 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 in 7 ways as a sum of consecutive naturals, for example, 4320 + ... + 4468.

2⁶⁵⁴⁷⁰⁶ is an apocalyptic number.

654706 is a deficient number, since it is larger than the sum of its proper divisors (416294).

654706 is a wasteful number, since it uses less digits than its factorization.

654706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 654706 is about 809.1390486190. The cubic root of 654706 is about 86.8324604113.

The spelling of 654706 in words is "six hundred fifty-four thousand, seven hundred six".