609216 has 56 divisors (see below), whose sum is σ = 1706880. Its totient is φ = 191232.

The previous prime is 609209. The next prime is 609221. The reversal of 609216 is 612906.

It is a super-2 number, since 2×609216² = 742288269312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3565 + ... + 3731.

It is an arithmetic number, because the mean of its divisors is an integer number (30480).

2⁶⁰⁹²¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (853440).

609216 is an abundant number, since it is smaller than the sum of its proper divisors (1097664).

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

609216 is a wasteful number, since it uses less digits than its factorization.

609216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 609216 is about 780.5229016499. The cubic root of 609216 is about 84.7729117229.

The spelling of 609216 in words is "six hundred nine thousand, two hundred sixteen".