654406 has 4 divisors (see below), whose sum is σ = 981612. Its totient is φ = 327202.

The previous prime is 654397. The next prime is 654413. The reversal of 654406 is 604456.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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, 163600 + ... + 163603.

It is an arithmetic number, because the mean of its divisors is an integer number (245403).

2⁶⁵⁴⁴⁰⁶ is an apocalyptic number.

654406 is a deficient number, since it is larger than the sum of its proper divisors (327206).

654406 is a wasteful number, since it uses less digits than its factorization.

654406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327205.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 654406 is about 808.9536451491. The cubic root of 654406 is about 86.8191955678.

The spelling of 654406 in words is "six hundred fifty-four thousand, four hundred six".