197646265765 has 8 divisors (see below), whose sum is σ = 255419789688. Its totient is φ = 145954165440.

The previous prime is 197646265763. The next prime is 197646265771. The reversal of 197646265765 is 567562646791.

It can be written as a sum of positive squares in 4 ways, for example, as 24002375329 + 173643890436 = 154927^2 + 416706^2 .

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

It is not a de Polignac number, because 197646265765 - 2¹ = 197646265763 is a prime.

It is a super-2 number, since 2×197646265765² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197646265697 and 197646265706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197646265763) 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, 1520355826 + ... + 1520355955.

It is an arithmetic number, because the mean of its divisors is an integer number (31927473711).

Almost surely, 2^197646265765 is an apocalyptic number.

It is an amenable number.

197646265765 is a deficient number, since it is larger than the sum of its proper divisors (57773523923).

197646265765 is a wasteful number, since it uses less digits than its factorization.

197646265765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040711799.

The product of its digits is 114307200, while the sum is 64.

The spelling of 197646265765 in words is "one hundred ninety-seven billion, six hundred forty-six million, two hundred sixty-five thousand, seven hundred sixty-five".