3750665 has 4 divisors (see below), whose sum is σ = 4500804. Its totient is φ = 3000528.

The previous prime is 3750631. The next prime is 3750697. The reversal of 3750665 is 5660573.

3750665 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 an emirpimes, since its reverse is a distinct semiprime: 5660573 = 809 ⋅6997.

It can be written as a sum of positive squares in 2 ways, for example, as 1630729 + 2119936 = 1277^2 + 1456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3750665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 375062 + ... + 375071.

It is an arithmetic number, because the mean of its divisors is an integer number (1125201).

Almost surely, 2^3750665 is an apocalyptic number.

It is an amenable number.

3750665 is a deficient number, since it is larger than the sum of its proper divisors (750139).

3750665 is an equidigital number, since it uses as much as digits as its factorization.

3750665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750138.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 3750665 is about 1936.6633677539. The cubic root of 3750665 is about 155.3708083532.

The spelling of 3750665 in words is "three million, seven hundred fifty thousand, six hundred sixty-five".