197481568 has 24 divisors (see below), whose sum is σ = 393481368. Its totient is φ = 97549824.

The previous prime is 197481547. The next prime is 197481569. The reversal of 197481568 is 865184791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197481569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34521 + ... + 39832.

It is an arithmetic number, because the mean of its divisors is an integer number (16395057).

Almost surely, 2^197481568 is an apocalyptic number.

It is an amenable number.

197481568 is a deficient number, since it is larger than the sum of its proper divisors (195999800).

197481568 is an equidigital number, since it uses as much as digits as its factorization.

197481568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74446 (or 74438 counting only the distinct ones).

The product of its digits is 483840, while the sum is 49.

The square root of 197481568 is about 14052.8135261235. The cubic root of 197481568 is about 582.3385252406.

It can be divided in two parts, 19748 and 1568, that added together give a square (21316 = 146²).

The spelling of 197481568 in words is "one hundred ninety-seven million, four hundred eighty-one thousand, five hundred sixty-eight".