3681751 has 4 divisors (see below), whose sum is σ = 3751272. Its totient is φ = 3612232.

The previous prime is 3681749. The next prime is 3681761. The reversal of 3681751 is 1571863.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3681751 - 2¹ = 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 (3681731) 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, 34681 + ... + 34786.

It is an arithmetic number, because the mean of its divisors is an integer number (937818).

Almost surely, 2^3681751 is an apocalyptic number.

3681751 is a deficient number, since it is larger than the sum of its proper divisors (69521).

3681751 is an equidigital number, since it uses as much as digits as its factorization.

3681751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69520.

The product of its digits is 5040, while the sum is 31.

The square root of 3681751 is about 1918.7889409729. The cubic root of 3681751 is about 154.4133355597.

It can be divided in two parts, 3 and 681751, that multiplied together give a triangular number (2045253 = T₂₀₂₂).

The spelling of 3681751 in words is "three million, six hundred eighty-one thousand, seven hundred fifty-one".