197609650 has 36 divisors (see below), whose sum is σ = 427568058. Its totient is φ = 67751040.

The previous prime is 197609641. The next prime is 197609651. The reversal of 197609650 is 56906791.

197609650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 193460281 + 4149369 = 13909^2 + 2037^2 .

It is a junction number, because it is equal to n+sod(n) for n = 197609597 and 197609606.

It is not an unprimeable number, because it can be changed into a prime (197609651) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 37879 + ... + 42778.

Almost surely, 2^197609650 is an apocalyptic number.

197609650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197609650 is an abundant number, since it is smaller than the sum of its proper divisors (229958408).

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

197609650 is a wasteful number, since it uses less digits than its factorization.

197609650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80683 (or 80671 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 197609650 is about 14057.3699531598. The cubic root of 197609650 is about 582.4643951541.

The spelling of 197609650 in words is "one hundred ninety-seven million, six hundred nine thousand, six hundred fifty".