197752066 has 4 divisors (see below), whose sum is σ = 296628102. Its totient is φ = 98876032.

The previous prime is 197752043. The next prime is 197752097. The reversal of 197752066 is 660257791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 151905625 + 45846441 = 12325^2 + 6771^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49438015 + ... + 49438018.

Almost surely, 2^197752066 is an apocalyptic number.

197752066 is a deficient number, since it is larger than the sum of its proper divisors (98876036).

197752066 is an equidigital number, since it uses as much as digits as its factorization.

197752066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98876035.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 197752066 is about 14062.4345687367. The cubic root of 197752066 is about 582.6042876636.

The spelling of 197752066 in words is "one hundred ninety-seven million, seven hundred fifty-two thousand, sixty-six".