2687698269 has 6 divisors (see below), whose sum is σ = 3882230846. Its totient is φ = 1791798840.

The previous prime is 2687698267. The next prime is 2687698271. The reversal of 2687698269 is 9628967862.

It is an interprime number because it is at equal distance from previous prime (2687698267) and next prime (2687698271).

It can be written as a sum of positive squares in only one way, i.e., 2519036100 + 168662169 = 50190^2 + 12987^2 .

It is not a de Polignac number, because 2687698269 - 2¹ = 2687698267 is a prime.

It is a super-2 number, since 2×2687698269² = 14447443970371192722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687698267) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 149316562 + ... + 149316579.

Almost surely, 2^2687698269 is an apocalyptic number.

It is an amenable number.

2687698269 is a deficient number, since it is larger than the sum of its proper divisors (1194532577).

2687698269 is a wasteful number, since it uses less digits than its factorization.

2687698269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298633147 (or 298633144 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The square root of 2687698269 is about 51843.0156240935. The cubic root of 2687698269 is about 1390.3586309585.

The spelling of 2687698269 in words is "two billion, six hundred eighty-seven million, six hundred ninety-eight thousand, two hundred sixty-nine".