3741781 has 4 divisors (see below), whose sum is σ = 3765772. Its totient is φ = 3717792.

The previous prime is 3741767. The next prime is 3741799. The reversal of 3741781 is 1871473.

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 2280100 + 1461681 = 1510^2 + 1209^2 .

It is a cyclic number.

It is not a de Polignac number, because 3741781 - 2⁷ = 3741653 is a prime.

It is a super-2 number, since 2×3741781² = 28001850103922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3744781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11760 + ... + 12073.

It is an arithmetic number, because the mean of its divisors is an integer number (941443).

Almost surely, 2^3741781 is an apocalyptic number.

It is an amenable number.

3741781 is a deficient number, since it is larger than the sum of its proper divisors (23991).

3741781 is a wasteful number, since it uses less digits than its factorization.

3741781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23990.

The product of its digits is 4704, while the sum is 31.

The square root of 3741781 is about 1934.3683723634. The cubic root of 3741781 is about 155.2480385223.

The spelling of 3741781 in words is "three million, seven hundred forty-one thousand, seven hundred eighty-one".