609867216 has 240 divisors, whose sum is σ = 2086056960. Its totient is φ = 162570240.

The previous prime is 609867211. The next prime is 609867217. The reversal of 609867216 is 612768906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609867211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 905856 + ... + 906528.

It is an arithmetic number, because the mean of its divisors is an integer number (8691904).

Almost surely, 2^609867216 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 609867216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1043028480).

609867216 is an abundant number, since it is smaller than the sum of its proper divisors (1476189744).

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

609867216 is a wasteful number, since it uses less digits than its factorization.

609867216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 609867216 is about 24695.4897906480. The cubic root of 609867216 is about 848.0310671542.

The spelling of 609867216 in words is "six hundred nine million, eight hundred sixty-seven thousand, two hundred sixteen".