3725861 has 4 divisors (see below), whose sum is σ = 3744972. Its totient is φ = 3706752.

The previous prime is 3725857. The next prime is 3725879. The reversal of 3725861 is 1685273.

It is a happy number.

3725861 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 3632836 + 93025 = 1906^2 + 305^2 .

It is not a de Polignac number, because 3725861 - 2² = 3725857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3725461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9260 + ... + 9653.

It is an arithmetic number, because the mean of its divisors is an integer number (936243).

Almost surely, 2^3725861 is an apocalyptic number.

It is an amenable number.

3725861 is a deficient number, since it is larger than the sum of its proper divisors (19111).

3725861 is a wasteful number, since it uses less digits than its factorization.

3725861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19110.

The product of its digits is 10080, while the sum is 32.

The square root of 3725861 is about 1930.2489476749. The cubic root of 3725861 is about 155.0275497336.

The spelling of 3725861 in words is "three million, seven hundred twenty-five thousand, eight hundred sixty-one".