197956 has 18 divisors (see below), whose sum is σ = 381710. Its totient is φ = 89760.

The previous prime is 197947. The next prime is 197957. The reversal of 197956 is 659791.

197956 = T₁₂₃ + T₁₂₄ + ... + T₁₄₄.

It can be written as a sum of positive squares in only one way, i.e., 193600 + 4356 = 440^2 + 66^2 .

It is not an unprimeable number, because it can be changed into a prime (197957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280 + ... + 688.

2¹⁹⁷⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

197956 is a deficient number, since it is larger than the sum of its proper divisors (183754).

197956 is a wasteful number, since it uses less digits than its factorization.

197956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435 (or 422 counting only the distinct ones).

The product of its digits is 17010, while the sum is 37.

The square root of 197956 is about 444.9224651554. The cubic root of 197956 is about 58.2804491225.

The spelling of 197956 in words is "one hundred ninety-seven thousand, nine hundred fifty-six".