3820605 has 16 divisors (see below), whose sum is σ = 6324480. Its totient is φ = 1967168.

The previous prime is 3820603. The next prime is 3820627. The reversal of 3820605 is 5060283.

It is a cyclic number.

It is not a de Polignac number, because 3820605 - 2¹ = 3820603 is a prime.

3820605 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3820603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3957 + ... + 4826.

It is an arithmetic number, because the mean of its divisors is an integer number (395280).

Almost surely, 2^3820605 is an apocalyptic number.

It is an amenable number.

3820605 is a deficient number, since it is larger than the sum of its proper divisors (2503875).

3820605 is a wasteful number, since it uses less digits than its factorization.

3820605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8820.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 3820605 is about 1954.6367949059. The cubic root of 3820605 is about 156.3306186636.

Adding to 3820605 its reverse (5060283), we get a palindrome (8880888).

The spelling of 3820605 in words is "three million, eight hundred twenty thousand, six hundred five".