197796865 has 16 divisors (see below), whose sum is σ = 272650752. Its totient is φ = 134938944.

The previous prime is 197796847. The next prime is 197796877. The reversal of 197796865 is 568697791.

It is not a de Polignac number, because 197796865 - 2¹³ = 197788673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7449 + ... + 21238.

It is an arithmetic number, because the mean of its divisors is an integer number (17040672).

Almost surely, 2^197796865 is an apocalyptic number.

It is an amenable number.

197796865 is a deficient number, since it is larger than the sum of its proper divisors (74853887).

197796865 is a wasteful number, since it uses less digits than its factorization.

197796865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28896.

The product of its digits is 5715360, while the sum is 58.

The square root of 197796865 is about 14064.0273392795. The cubic root of 197796865 is about 582.6482789762.

The spelling of 197796865 in words is "one hundred ninety-seven million, seven hundred ninety-six thousand, eight hundred sixty-five".