3749686 has 16 divisors (see below), whose sum is σ = 5860800. Its totient is φ = 1797768.

The previous prime is 3749677. The next prime is 3749687. The reversal of 3749686 is 6869473.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3749687) 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 7 ways as a sum of consecutive naturals, for example, 4705 + ... + 5443.

It is an arithmetic number, because the mean of its divisors is an integer number (366300).

Almost surely, 2^3749686 is an apocalyptic number.

3749686 is a deficient number, since it is larger than the sum of its proper divisors (2111114).

3749686 is a wasteful number, since it uses less digits than its factorization.

3749686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843.

The product of its digits is 217728, while the sum is 43.

The square root of 3749686 is about 1936.4105969551. The cubic root of 3749686 is about 155.3572888611.

The spelling of 3749686 in words is "three million, seven hundred forty-nine thousand, six hundred eighty-six".