197099856 has 60 divisors (see below), whose sum is σ = 553494708. Its totient is φ = 65475072.

The previous prime is 197099821. The next prime is 197099867. The reversal of 197099856 is 658990791.

197099856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 40449600 + 156650256 = 6360^2 + 12516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42886 + ... + 47258.

Almost surely, 2^197099856 is an apocalyptic number.

197099856 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 197099856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276747354).

197099856 is an abundant number, since it is smaller than the sum of its proper divisors (356394852).

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

197099856 is a wasteful number, since it uses less digits than its factorization.

197099856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700 (or 4691 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 54.

The square root of 197099856 is about 14039.2256196701. The cubic root of 197099856 is about 581.9630826479.

The spelling of 197099856 in words is "one hundred ninety-seven million, ninety-nine thousand, eight hundred fifty-six".