197067505 has 4 divisors (see below), whose sum is σ = 236481012. Its totient is φ = 157654000.

The previous prime is 197067503. The next prime is 197067509. The reversal of 197067505 is 505760791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505760791 = 19 ⋅26618989.

It can be written as a sum of positive squares in 2 ways, for example, as 43877376 + 153190129 = 6624^2 + 12377^2 .

It is not a de Polignac number, because 197067505 - 2¹ = 197067503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197067503) 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, 19706746 + ... + 19706755.

It is an arithmetic number, because the mean of its divisors is an integer number (59120253).

Almost surely, 2^197067505 is an apocalyptic number.

It is an amenable number.

197067505 is a deficient number, since it is larger than the sum of its proper divisors (39413507).

197067505 is an equidigital number, since it uses as much as digits as its factorization.

197067505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39413506.

The product of its (nonzero) digits is 66150, while the sum is 40.

The square root of 197067505 is about 14038.0734077009. The cubic root of 197067505 is about 581.9312407206.

The spelling of 197067505 in words is "one hundred ninety-seven million, sixty-seven thousand, five hundred five".