3669481 has 4 divisors (see below), whose sum is σ = 3676500. Its totient is φ = 3662464.

The previous prime is 3669473. The next prime is 3669487. The reversal of 3669481 is 1849663.

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 2277081 + 1392400 = 1509^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 3669481 - 2³ = 3669473 is a prime.

It is a super-2 number, since 2×3669481² = 26930181618722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

3669481 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3669481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3669487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2656 + ... + 3793.

It is an arithmetic number, because the mean of its divisors is an integer number (919125).

Almost surely, 2^3669481 is an apocalyptic number.

It is an amenable number.

3669481 is a deficient number, since it is larger than the sum of its proper divisors (7019).

3669481 is an equidigital number, since it uses as much as digits as its factorization.

3669481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7018.

The product of its digits is 31104, while the sum is 37.

The square root of 3669481 is about 1915.5889433801. The cubic root of 3669481 is about 154.2416092740.

The spelling of 3669481 in words is "three million, six hundred sixty-nine thousand, four hundred eighty-one".