3681757 has 4 divisors (see below), whose sum is σ = 3697276. Its totient is φ = 3666240.

The previous prime is 3681749. The next prime is 3681761. The reversal of 3681757 is 7571863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7571863 = 13 ⋅582451.

It can be written as a sum of positive squares in 2 ways, for example, as 1413721 + 2268036 = 1189^2 + 1506^2 .

It is a cyclic number.

It is not a de Polignac number, because 3681757 - 2³ = 3681749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681767) 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 3 ways as a sum of consecutive naturals, for example, 7398 + ... + 7879.

It is an arithmetic number, because the mean of its divisors is an integer number (924319).

Almost surely, 2^3681757 is an apocalyptic number.

It is an amenable number.

3681757 is a deficient number, since it is larger than the sum of its proper divisors (15519).

3681757 is a wasteful number, since it uses less digits than its factorization.

3681757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15518.

The product of its digits is 35280, while the sum is 37.

The square root of 3681757 is about 1918.7905044585. The cubic root of 3681757 is about 154.4134194400.

The spelling of 3681757 in words is "three million, six hundred eighty-one thousand, seven hundred fifty-seven".