197565013 has 4 divisors (see below), whose sum is σ = 197604000. Its totient is φ = 197526028.

The previous prime is 197564993. The next prime is 197565037. The reversal of 197565013 is 310565791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310565791 = 827 ⋅375533.

It is a cyclic number.

It is not a de Polignac number, because 197565013 - 2²¹ = 195467861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197565113) 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, 10513 + ... + 22486.

It is an arithmetic number, because the mean of its divisors is an integer number (49401000).

Almost surely, 2^197565013 is an apocalyptic number.

It is an amenable number.

197565013 is a deficient number, since it is larger than the sum of its proper divisors (38987).

197565013 is an equidigital number, since it uses as much as digits as its factorization.

197565013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38986.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 197565013 is about 14055.7821909704. The cubic root of 197565013 is about 582.4205352497.

The spelling of 197565013 in words is "one hundred ninety-seven million, five hundred sixty-five thousand, thirteen".