1997565070966 has 8 divisors (see below), whose sum is σ = 2996366677704. Its totient is φ = 998776178400.

The previous prime is 1997565070961. The next prime is 1997565070967. The reversal of 1997565070966 is 6690705657991.

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

It is a junction number, because it is equal to n+sod(n) for n = 1997565070895 and 1997565070904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997565070961) 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 3 ways as a sum of consecutive naturals, for example, 2775540 + ... + 3420343.

It is an arithmetic number, because the mean of its divisors is an integer number (374545834713).

Almost surely, 2^{1997565070966} is an apocalyptic number.

1997565070966 is a deficient number, since it is larger than the sum of its proper divisors (998801606738).

1997565070966 is a wasteful number, since it uses less digits than its factorization.

1997565070966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357086.

The product of its (nonzero) digits is 192893400, while the sum is 70.

The spelling of 1997565070966 in words is "one trillion, nine hundred ninety-seven billion, five hundred sixty-five million, seventy thousand, nine hundred sixty-six".