3686526761 has 4 divisors (see below), whose sum is σ = 3727948500. Its totient is φ = 3645105024.

The previous prime is 3686526751. The next prime is 3686526763. The reversal of 3686526761 is 1676256863.

3686526761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1676256863 = 857 ⋅1955959.

It can be written as a sum of positive squares in 2 ways, for example, as 1430276761 + 2256250000 = 37819^2 + 47500^2 .

It is a cyclic number.

It is not a de Polignac number, because 3686526761 - 2¹⁰ = 3686525737 is a prime.

It is a super-2 number, since 2×3686526761² = 27180959119138302242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3686526763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20710736 + ... + 20710913.

It is an arithmetic number, because the mean of its divisors is an integer number (931987125).

Almost surely, 2^3686526761 is an apocalyptic number.

It is an amenable number.

3686526761 is a deficient number, since it is larger than the sum of its proper divisors (41421739).

3686526761 is an equidigital number, since it uses as much as digits as its factorization.

3686526761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41421738.

The product of its digits is 2177280, while the sum is 50.

The square root of 3686526761 is about 60716.7749555261. The cubic root of 3686526761 is about 1544.8007215318.

The spelling of 3686526761 in words is "three billion, six hundred eighty-six million, five hundred twenty-six thousand, seven hundred sixty-one".