609654 has 32 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 185472.

The previous prime is 609641. The next prime is 609673. The reversal of 609654 is 456906.

It is a d-powerful number, because it can be written as 6² + 0 + 6² + 9⁶ + 5⁷ + 4² .

It is a congruent number.

It is an unprimeable number.

609654 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 15 ways as a sum of consecutive naturals, for example, 4317 + ... + 4455.

It is an arithmetic number, because the mean of its divisors is an integer number (41580).

2⁶⁰⁹⁶⁵⁴ is an apocalyptic number.

609654 is an abundant number, since it is smaller than the sum of its proper divisors (720906).

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

609654 is a wasteful number, since it uses less digits than its factorization.

609654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204.

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

The square root of 609654 is about 780.8034323695. The cubic root of 609654 is about 84.7932228772.

The spelling of 609654 in words is "six hundred nine thousand, six hundred fifty-four".