654906 has 32 divisors (see below), whose sum is σ = 1548288. Its totient is φ = 180720.

The previous prime is 654889. The next prime is 654917. The reversal of 654906 is 609456.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1051 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (48384).

2⁶⁵⁴⁹⁰⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (774144).

654906 is an abundant number, since it is smaller than the sum of its proper divisors (893382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654906 is a wasteful number, since it uses less digits than its factorization.

654906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 654906 is about 809.2626273343. The cubic root of 654906 is about 86.8413013893.

The spelling of 654906 in words is "six hundred fifty-four thousand, nine hundred six".