3765021 has 16 divisors (see below), whose sum is σ = 5691840. Its totient is φ = 2194560.

The previous prime is 3765019. The next prime is 3765023. The reversal of 3765021 is 1205673.

It is an interprime number because it is at equal distance from previous prime (3765019) and next prime (3765023).

It is not a de Polignac number, because 3765021 - 2¹ = 3765019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3764982 and 3765000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3765023) 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 15 ways as a sum of consecutive naturals, for example, 1800 + ... + 3281.

It is an arithmetic number, because the mean of its divisors is an integer number (355740).

Almost surely, 2^3765021 is an apocalyptic number.

It is an amenable number.

3765021 is a deficient number, since it is larger than the sum of its proper divisors (1926819).

3765021 is a wasteful number, since it uses less digits than its factorization.

3765021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5116.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 3765021 is about 1940.3662025504. The cubic root of 3765021 is about 155.5687877822.

The spelling of 3765021 in words is "three million, seven hundred sixty-five thousand, twenty-one".