3680261 has 4 divisors (see below), whose sum is σ = 3963372. Its totient is φ = 3397152.

The previous prime is 3680249. The next prime is 3680263. The reversal of 3680261 is 1620863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1620863 = 131 ⋅12373.

It can be written as a sum of positive squares in 2 ways, for example, as 1020100 + 2660161 = 1010^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 3680261 - 2¹⁰ = 3679237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3680261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3680263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141536 + ... + 141561.

It is an arithmetic number, because the mean of its divisors is an integer number (990843).

Almost surely, 2^3680261 is an apocalyptic number.

It is an amenable number.

3680261 is a deficient number, since it is larger than the sum of its proper divisors (283111).

3680261 is a wasteful number, since it uses less digits than its factorization.

3680261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283110.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 3680261 is about 1918.4006359465. The cubic root of 3680261 is about 154.3925024548.

It can be divided in two parts, 36802 and 61, that added together give a palindrome (36863).

The spelling of 3680261 in words is "three million, six hundred eighty thousand, two hundred sixty-one".