2685420117 has 12 divisors (see below), whose sum is σ = 3879890560. Its totient is φ = 1789841448.

The previous prime is 2685420103. The next prime is 2685420193. The reversal of 2685420117 is 7110245862.

It is not a de Polignac number, because 2685420117 - 2¹² = 2685416021 is a prime.

It is a super-2 number, since 2×2685420117² = 14422962409576587378, 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 (2685420197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4668 + ... + 73434.

Almost surely, 2^2685420117 is an apocalyptic number.

It is an amenable number.

2685420117 is a deficient number, since it is larger than the sum of its proper divisors (1194470443).

2685420117 is a wasteful number, since it uses less digits than its factorization.

2685420117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73112 (or 73109 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 2685420117 is about 51821.0393276708. The cubic root of 2685420117 is about 1389.9656870918.

Adding to 2685420117 its reverse (7110245862), we get a palindrome (9795665979).

It can be divided in two parts, 26854 and 20117, that added together give a triangular number (46971 = T₃₀₆).

The spelling of 2685420117 in words is "two billion, six hundred eighty-five million, four hundred twenty thousand, one hundred seventeen".