3656490 has 16 divisors (see below), whose sum is σ = 8775648. Its totient is φ = 975056.

The previous prime is 3656483. The next prime is 3656491. The reversal of 3656490 is 946563.

It is a happy number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3656491) 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 7 ways as a sum of consecutive naturals, for example, 60912 + ... + 60971.

It is an arithmetic number, because the mean of its divisors is an integer number (548478).

Almost surely, 2^3656490 is an apocalyptic number.

3656490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3656490 is an abundant number, since it is smaller than the sum of its proper divisors (5119158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3656490 is a wasteful number, since it uses less digits than its factorization.

3656490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121893.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 3656490 is about 1912.1950737307. The cubic root of 3656490 is about 154.0593744180.

The spelling of 3656490 in words is "three million, six hundred fifty-six thousand, four hundred ninety".