3765820 has 12 divisors (see below), whose sum is σ = 7908264. Its totient is φ = 1506320.

The previous prime is 3765799. The next prime is 3765829. The reversal of 3765820 is 285673.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3765829) 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 3 ways as a sum of consecutive naturals, for example, 94126 + ... + 94165.

It is an arithmetic number, because the mean of its divisors is an integer number (659022).

Almost surely, 2^3765820 is an apocalyptic number.

It is an amenable number.

3765820 is an abundant number, since it is smaller than the sum of its proper divisors (4142444).

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

3765820 is a wasteful number, since it uses less digits than its factorization.

3765820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188300 (or 188298 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 3765820 is about 1940.5720805989. The cubic root of 3765820 is about 155.5797917641.

The spelling of 3765820 in words is "three million, seven hundred sixty-five thousand, eight hundred twenty".