3677221 has 4 divisors (see below), whose sum is σ = 3684172. Its totient is φ = 3670272.

The previous prime is 3677209. The next prime is 3677227. The reversal of 3677221 is 1227763.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1227763 = 23 ⋅53381.

It can be written as a sum of positive squares in 2 ways, for example, as 3441025 + 236196 = 1855^2 + 486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3677221 is a prime.

It is a Duffinian number.

3677221 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3677221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3677227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2610 + ... + 3763.

It is an arithmetic number, because the mean of its divisors is an integer number (921043).

Almost surely, 2^3677221 is an apocalyptic number.

It is an amenable number.

3677221 is a deficient number, since it is larger than the sum of its proper divisors (6951).

3677221 is an equidigital number, since it uses as much as digits as its factorization.

3677221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6950.

The product of its digits is 3528, while the sum is 28.

The square root of 3677221 is about 1917.6081455814. The cubic root of 3677221 is about 154.3499798819.

The spelling of 3677221 in words is "three million, six hundred seventy-seven thousand, two hundred twenty-one".