197287797 has 8 divisors (see below), whose sum is σ = 300629056. Its totient is φ = 112735872.

The previous prime is 197287793. The next prime is 197287819. The reversal of 197287797 is 797782791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 197287797 - 2² = 197287793 is a prime.

It is a super-2 number, since 2×197287797² = 77844949690226418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197287793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4697308 + ... + 4697349.

It is an arithmetic number, because the mean of its divisors is an integer number (37578632).

Almost surely, 2^197287797 is an apocalyptic number.

It is an amenable number.

197287797 is a deficient number, since it is larger than the sum of its proper divisors (103341259).

197287797 is an equidigital number, since it uses as much as digits as its factorization.

197287797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9394667.

The product of its digits is 3111696, while the sum is 57.

The square root of 197287797 is about 14045.9174495652. The cubic root of 197287797 is about 582.1479973408.

The spelling of 197287797 in words is "one hundred ninety-seven million, two hundred eighty-seven thousand, seven hundred ninety-seven".