197690505 has 8 divisors (see below), whose sum is σ = 316304832. Its totient is φ = 105434928.

The previous prime is 197690491. The next prime is 197690509. The reversal of 197690505 is 505096791.

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

It is not a de Polignac number, because 197690505 - 2⁷ = 197690377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197690509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6589669 + ... + 6589698.

It is an arithmetic number, because the mean of its divisors is an integer number (39538104).

Almost surely, 2^197690505 is an apocalyptic number.

197690505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197690505 is a deficient number, since it is larger than the sum of its proper divisors (118614327).

197690505 is a wasteful number, since it uses less digits than its factorization.

197690505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13179375.

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 197690505 is about 14060.2455526210. The cubic root of 197690505 is about 582.5438257164.

The spelling of 197690505 in words is "one hundred ninety-seven million, six hundred ninety thousand, five hundred five".