197156608 has 72 divisors (see below), whose sum is σ = 437751216. Its totient is φ = 87859200.

The previous prime is 197156579. The next prime is 197156611. The reversal of 197156608 is 806651791.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148588 + ... + 149908.

It is an arithmetic number, because the mean of its divisors is an integer number (6079878).

Almost surely, 2^197156608 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 197156608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218875608).

197156608 is an abundant number, since it is smaller than the sum of its proper divisors (240594608).

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

197156608 is a wasteful number, since it uses less digits than its factorization.

197156608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 197156608 is about 14041.2466682984. The cubic root of 197156608 is about 582.0189331866.

The spelling of 197156608 in words is "one hundred ninety-seven million, one hundred fifty-six thousand, six hundred eight".