197609808 has 80 divisors (see below), whose sum is σ = 568820736. Its totient is φ = 58600320.

The previous prime is 197609807. The next prime is 197609809. The reversal of 197609808 is 808906791.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (197609807) and next prime (197609809).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197609807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20835 + ... + 28797.

Almost surely, 2^197609808 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 197609808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284410368).

197609808 is an abundant number, since it is smaller than the sum of its proper divisors (371210928).

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

197609808 is a wasteful number, since it uses less digits than its factorization.

197609808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8032 (or 8026 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 197609808 is about 14057.3755729866. The cubic root of 197609808 is about 582.4645503917.

The spelling of 197609808 in words is "one hundred ninety-seven million, six hundred nine thousand, eight hundred eight".