197185616 has 40 divisors (see below), whose sum is σ = 404453280. Its totient is φ = 92969856.

The previous prime is 197185561. The next prime is 197185621. The reversal of 197185616 is 616581791.

197185616 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 15011 + ... + 24893.

It is an arithmetic number, because the mean of its divisors is an integer number (10111332).

Almost surely, 2^197185616 is an apocalyptic number.

197185616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197185616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202226640).

197185616 is an abundant number, since it is smaller than the sum of its proper divisors (207267664).

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

197185616 is a wasteful number, since it uses less digits than its factorization.

197185616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9963 (or 9957 counting only the distinct ones).

The product of its digits is 90720, while the sum is 44.

The square root of 197185616 is about 14042.2795870186. The cubic root of 197185616 is about 582.0474762780.

The spelling of 197185616 in words is "one hundred ninety-seven million, one hundred eighty-five thousand, six hundred sixteen".