197427 has 4 divisors (see below), whose sum is σ = 263240. Its totient is φ = 131616.

The previous prime is 197423. The next prime is 197441. The reversal of 197427 is 724791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 724791 = 3 ⋅241597.

It is not a de Polignac number, because 197427 - 2² = 197423 is a prime.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 197394 and 197403.

It is not an unprimeable number, because it can be changed into a prime (197423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32902 + ... + 32907.

It is an arithmetic number, because the mean of its divisors is an integer number (65810).

2¹⁹⁷⁴²⁷ is an apocalyptic number.

197427 is a deficient number, since it is larger than the sum of its proper divisors (65813).

197427 is an equidigital number, since it uses as much as digits as its factorization.

197427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65812.

The product of its digits is 3528, while the sum is 30.

The square root of 197427 is about 444.3275818583. The cubic root of 197427 is about 58.2284883144.

The spelling of 197427 in words is "one hundred ninety-seven thousand, four hundred twenty-seven".