197074662661 has 8 divisors (see below), whose sum is σ = 197712393984. Its totient is φ = 196437032880.

The previous prime is 197074662613. The next prime is 197074662677. The reversal of 197074662661 is 166266470791.

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

It is a cyclic number.

It is not a de Polignac number, because 197074662661 - 2¹¹ = 197074660613 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 (197074665661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6766416 + ... + 6795478.

It is an arithmetic number, because the mean of its divisors is an integer number (24714049248).

Almost surely, 2^197074662661 is an apocalyptic number.

It is an amenable number.

197074662661 is a deficient number, since it is larger than the sum of its proper divisors (637731323).

197074662661 is a wasteful number, since it uses less digits than its factorization.

197074662661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50771.

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 197074662661 in words is "one hundred ninety-seven billion, seventy-four million, six hundred sixty-two thousand, six hundred sixty-one".