197606920900 has 27 divisors (see below), whose sum is σ = 428816664871. Its totient is φ = 79040990240.

The previous prime is 197606920817. The next prime is 197606920933. The reversal of 197606920900 is 9029606791.

The square root of 197606920900 is 444530.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 43403055556 + 154203865344 = 208334^2 + 392688^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4423074 + ... + 4467526.

Almost surely, 2^197606920900 is an apocalyptic number.

197606920900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197606920900 is the 444530-th square number.

It is an amenable number.

197606920900 is an abundant number, since it is smaller than the sum of its proper divisors (231209743971).

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

197606920900 is an frugal number, since it uses more digits than its factorization.

197606920900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88920 (or 44460 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 49.

Multiplying 197606920900 by its sum of digits (49), we get a square (9682739124100 = 3111710²).

The spelling of 197606920900 in words is "one hundred ninety-seven billion, six hundred six million, nine hundred twenty thousand, nine hundred".