3609820 has 12 divisors (see below), whose sum is σ = 7580664. Its totient is φ = 1443920.

The previous prime is 3609817. The next prime is 3609821. The reversal of 3609820 is 289063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3609821) 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, 90226 + ... + 90265.

It is an arithmetic number, because the mean of its divisors is an integer number (631722).

Almost surely, 2^3609820 is an apocalyptic number.

It is an amenable number.

3609820 is an abundant number, since it is smaller than the sum of its proper divisors (3970844).

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

3609820 is a wasteful number, since it uses less digits than its factorization.

3609820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180500 (or 180498 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 3609820 is about 1899.9526309885. The cubic root of 3609820 is about 153.4011147501.

The spelling of 3609820 in words is "three million, six hundred nine thousand, eight hundred twenty".