3658820 has 24 divisors (see below), whose sum is σ = 8382528. Its totient is φ = 1330400.

The previous prime is 3658813. The next prime is 3658829. The reversal of 3658820 is 288563.

3658820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3658829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8096 + ... + 8535.

It is an arithmetic number, because the mean of its divisors is an integer number (349272).

Almost surely, 2^3658820 is an apocalyptic number.

It is an amenable number.

3658820 is an abundant number, since it is smaller than the sum of its proper divisors (4723708).

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

3658820 is a wasteful number, since it uses less digits than its factorization.

3658820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16651 (or 16649 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 3658820 is about 1912.8042241693. The cubic root of 3658820 is about 154.0920908686.

The spelling of 3658820 in words is "three million, six hundred fifty-eight thousand, eight hundred twenty".