197689212 has 36 divisors (see below), whose sum is σ = 571102896. Its totient is φ = 56482560.

The previous prime is 197689207. The next prime is 197689213. The reversal of 197689212 is 212986791.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197689213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391989 + ... + 392492.

Almost surely, 2^197689212 is an apocalyptic number.

197689212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

197689212 is an abundant number, since it is smaller than the sum of its proper divisors (373413684).

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

197689212 is a wasteful number, since it uses less digits than its factorization.

197689212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784498 (or 784493 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 197689212 is about 14060.1995718411. The cubic root of 197689212 is about 582.5425556659.

The spelling of 197689212 in words is "one hundred ninety-seven million, six hundred eighty-nine thousand, two hundred twelve".