197220768 has 96 divisors (see below), whose sum is σ = 544320000. Its totient is φ = 62405376.

The previous prime is 197220763. The next prime is 197220797. The reversal of 197220768 is 867022791.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (197220761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394983 + ... + 395481.

It is an arithmetic number, because the mean of its divisors is an integer number (5670000).

Almost surely, 2^197220768 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 197220768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272160000).

197220768 is an abundant number, since it is smaller than the sum of its proper divisors (347099232).

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

197220768 is a wasteful number, since it uses less digits than its factorization.

197220768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 197220768 is about 14043.5311798707. The cubic root of 197220768 is about 582.0820611489.

The spelling of 197220768 in words is "one hundred ninety-seven million, two hundred twenty thousand, seven hundred sixty-eight".