655194216 has 64 divisors (see below), whose sum is σ = 1698825600. Its totient is φ = 210325248.

The previous prime is 655194193. The next prime is 655194251. The reversal of 655194216 is 612491556.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337986 + ... + 339918.

It is an arithmetic number, because the mean of its divisors is an integer number (26544150).

Almost surely, 2^655194216 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 655194216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849412800).

655194216 is an abundant number, since it is smaller than the sum of its proper divisors (1043631384).

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

655194216 is a wasteful number, since it uses less digits than its factorization.

655194216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458 (or 2454 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 655194216 is about 25596.7618264498. The cubic root of 655194216 is about 868.5403878050.

The spelling of 655194216 in words is "six hundred fifty-five million, one hundred ninety-four thousand, two hundred sixteen".