3820655 has 4 divisors (see below), whose sum is σ = 4584792. Its totient is φ = 3056520.

The previous prime is 3820651. The next prime is 3820673. The reversal of 3820655 is 5560283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5560283 = 53 ⋅104911.

It is not a de Polignac number, because 3820655 - 2² = 3820651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3820651) 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 3 ways as a sum of consecutive naturals, for example, 382061 + ... + 382070.

It is an arithmetic number, because the mean of its divisors is an integer number (1146198).

Almost surely, 2^3820655 is an apocalyptic number.

3820655 is a deficient number, since it is larger than the sum of its proper divisors (764137).

3820655 is an equidigital number, since it uses as much as digits as its factorization.

3820655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764136.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 3820655 is about 1954.6495849640. The cubic root of 3820655 is about 156.3313006233.

The spelling of 3820655 in words is "three million, eight hundred twenty thousand, six hundred fifty-five".