654418 has 4 divisors (see below), whose sum is σ = 981630. Its totient is φ = 327208.

The previous prime is 654413. The next prime is 654421. The reversal of 654418 is 814456.

654418 is nontrivially palindromic in base 3.

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

It can be written as a sum of positive squares in only one way, i.e., 332929 + 321489 = 577^2 + 567^2 .

It is not an unprimeable number, because it can be changed into a prime (654413) 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, 163603 + ... + 163606.

2⁶⁵⁴⁴¹⁸ is an apocalyptic number.

654418 is a deficient number, since it is larger than the sum of its proper divisors (327212).

654418 is a wasteful number, since it uses less digits than its factorization.

654418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327211.

The product of its digits is 3840, while the sum is 28.

The square root of 654418 is about 808.9610621037. The cubic root of 654418 is about 86.8197262393.

It can be divided in two parts, 654 and 418, that multiplied together give a palindrome (273372).

The spelling of 654418 in words is "six hundred fifty-four thousand, four hundred eighteen".