3870365 has 4 divisors (see below), whose sum is σ = 4644444. Its totient is φ = 3096288.

The previous prime is 3870337. The next prime is 3870401. The reversal of 3870365 is 5630783.

It is a happy number.

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 2647129 + 1223236 = 1627^2 + 1106^2 .

It is a cyclic number.

It is not a de Polignac number, because 3870365 - 2¹⁸ = 3608221 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 387032 + ... + 387041.

It is an arithmetic number, because the mean of its divisors is an integer number (1161111).

Almost surely, 2^3870365 is an apocalyptic number.

It is an amenable number.

3870365 is a deficient number, since it is larger than the sum of its proper divisors (774079).

3870365 is an equidigital number, since it uses as much as digits as its factorization.

3870365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774078.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 3870365 is about 1967.3243250669. The cubic root of 3870365 is about 157.0063826905.

The spelling of 3870365 in words is "three million, eight hundred seventy thousand, three hundred sixty-five".