654842 has 4 divisors (see below), whose sum is σ = 982266. Its totient is φ = 327420.

The previous prime is 654839. The next prime is 654853. The reversal of 654842 is 248456.

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., 654481 + 361 = 809^2 + 19^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163709 + ... + 163712.

2⁶⁵⁴⁸⁴² is an apocalyptic number.

654842 is a deficient number, since it is larger than the sum of its proper divisors (327424).

654842 is a wasteful number, since it uses less digits than its factorization.

654842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327423.

The product of its digits is 7680, while the sum is 29.

The square root of 654842 is about 809.2230841987. The cubic root of 654842 is about 86.8384724722.

The spelling of 654842 in words is "six hundred fifty-four thousand, eight hundred forty-two".