3747861 has 24 divisors (see below), whose sum is σ = 5905536. Its totient is φ = 2276640.

The previous prime is 3747847. The next prime is 3747899. The reversal of 3747861 is 1687473.

It is not a de Polignac number, because 3747861 - 2⁹ = 3747349 is a prime.

3747861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3747811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11896 + ... + 12206.

It is an arithmetic number, because the mean of its divisors is an integer number (246064).

Almost surely, 2^3747861 is an apocalyptic number.

It is an amenable number.

3747861 is a deficient number, since it is larger than the sum of its proper divisors (2157675).

3747861 is a wasteful number, since it uses less digits than its factorization.

3747861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 430 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 3747861 is about 1935.9393068999. The cubic root of 3747861 is about 155.3320802558.

The spelling of 3747861 in words is "three million, seven hundred forty-seven thousand, eight hundred sixty-one".