207696213169 has 3 divisors (see below), whose sum is σ = 207696668907. Its totient is φ = 207695757432.

The previous prime is 207696213163. The next prime is 207696213313. The reversal of 207696213169 is 961312696702.

It is a happy number.

The square root of 207696213169 is 455737.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 32564007025 + 175132206144 = 180455^2 + 418488^2 .

It is not a de Polignac number, because 207696213169 - 2⁷ = 207696213041 is a prime.

It is a super-2 number, since 2×207696213169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (207696213163) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 227869 + ... + 683605.

It is an arithmetic number, because the mean of its divisors is an integer number (69232222969).

Almost surely, 2^207696213169 is an apocalyptic number.

207696213169 is the 455737-th square number.

207696213169 is the 227869-th centered octagonal number.

It is an amenable number.

207696213169 is a deficient number, since it is larger than the sum of its proper divisors (455738).

207696213169 is an frugal number, since it uses more digits than its factorization.

207696213169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911474 (or 455737 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 207696213169 in words is "two hundred seven billion, six hundred ninety-six million, two hundred thirteen thousand, one hundred sixty-nine".