655503216 has 40 divisors (see below), whose sum is σ = 1722092160.
Its totient is φ = 214796736.
The previous prime is 655503209. The next prime is 655503229. The reversal of 655503216 is 612305556.
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, 112900 + ... + 118563.
It is an arithmetic number, because the mean of its divisors is an integer number (43052304).
Almost surely, 2655503216 is an apocalyptic number.
It is an amenable number.
655503216 is an abundant number, since it is smaller than the sum of its proper divisors (1066588944).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
655503216 is a wasteful number, since it uses less digits than its factorization.
655503216 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 231533 (or 231527 counting only the distinct ones).
The product of its (nonzero) digits is 27000, while the sum is 33.
The square root of 655503216 is about 25602.7970346992.
The cubic root of 655503216 is about 868.6769054938.
The spelling of 655503216 in words is "six hundred fifty-five million, five hundred three thousand, two hundred sixteen".