240665198 has 4 divisors (see below), whose sum is σ = 360997800. Its totient is φ = 120332598.

The previous prime is 240665179. The next prime is 240665207. The reversal of 240665198 is 891566042.

It is a happy number.

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

It is a congruent number.

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, 60166298 + ... + 60166301.

It is an arithmetic number, because the mean of its divisors is an integer number (90249450).

Almost surely, 2^240665198 is an apocalyptic number.

240665198 is a deficient number, since it is larger than the sum of its proper divisors (120332602).

240665198 is a wasteful number, since it uses less digits than its factorization.

240665198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120332601.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 240665198 is about 15513.3877022396. The cubic root of 240665198 is about 622.0201173520.

The spelling of 240665198 in words is "two hundred forty million, six hundred sixty-five thousand, one hundred ninety-eight".