197817696 has 72 divisors (see below), whose sum is σ = 580716864. Its totient is φ = 63809280.

The previous prime is 197817649. The next prime is 197817709. The reversal of 197817696 is 696718791.

197817696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

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, 2151 + ... + 20006.

It is an arithmetic number, because the mean of its divisors is an integer number (8065512).

Almost surely, 2^197817696 is an apocalyptic number.

197817696 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 197817696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290358432).

197817696 is an abundant number, since it is smaller than the sum of its proper divisors (382899168).

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

197817696 is a wasteful number, since it uses less digits than its factorization.

197817696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22204 (or 22193 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 54.

The square root of 197817696 is about 14064.7678971251. The cubic root of 197817696 is about 582.6687321487.

The spelling of 197817696 in words is "one hundred ninety-seven million, eight hundred seventeen thousand, six hundred ninety-six".