3748681 has 4 divisors (see below), whose sum is σ = 3946000. Its totient is φ = 3551364.

The previous prime is 3748669. The next prime is 3748699. The reversal of 3748681 is 1868473.

It is a happy number.

3748681 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1868473 = 241 ⋅7753.

It is a cyclic number.

It is not a de Polignac number, because 3748681 - 2⁷ = 3748553 is a prime.

It is a super-2 number, since 2×3748681² = 28105218479522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3748681.

It is not an unprimeable number, because it can be changed into a prime (3748651) 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, 98631 + ... + 98668.

It is an arithmetic number, because the mean of its divisors is an integer number (986500).

Almost surely, 2^3748681 is an apocalyptic number.

It is an amenable number.

3748681 is a deficient number, since it is larger than the sum of its proper divisors (197319).

3748681 is a wasteful number, since it uses less digits than its factorization.

3748681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197318.

The product of its digits is 32256, while the sum is 37.

The square root of 3748681 is about 1936.1510788159. The cubic root of 3748681 is about 155.3434078742.

The spelling of 3748681 in words is "three million, seven hundred forty-eight thousand, six hundred eighty-one".