197661716 has 24 divisors (see below), whose sum is σ = 401807616. Its totient is φ = 83322720.

The previous prime is 197661689. The next prime is 197661719. The reversal of 197661716 is 617166791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197661719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56156 + ... + 59571.

It is an arithmetic number, because the mean of its divisors is an integer number (16741984).

Almost surely, 2^197661716 is an apocalyptic number.

It is an amenable number.

197661716 is an abundant number, since it is smaller than the sum of its proper divisors (204145900).

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

197661716 is a wasteful number, since it uses less digits than its factorization.

197661716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115799 (or 115797 counting only the distinct ones).

The product of its digits is 95256, while the sum is 44.

The square root of 197661716 is about 14059.2217423298. The cubic root of 197661716 is about 582.5155463809.

The spelling of 197661716 in words is "one hundred ninety-seven million, six hundred sixty-one thousand, seven hundred sixteen".