3721580 has 24 divisors (see below), whose sum is σ = 7853328. Its totient is φ = 1481408.

The previous prime is 3721559. The next prime is 3721583. The reversal of 3721580 is 851273.

3721580 is digitally balanced in base 2 and base 5, because in such bases 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 (3721583) 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, 6047 + ... + 6633.

It is an arithmetic number, because the mean of its divisors is an integer number (327222).

Almost surely, 2^3721580 is an apocalyptic number.

It is an amenable number.

3721580 is an abundant number, since it is smaller than the sum of its proper divisors (4131748).

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

3721580 is a wasteful number, since it uses less digits than its factorization.

3721580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 3721580 is about 1929.1397046352. The cubic root of 3721580 is about 154.9681516250.

The spelling of 3721580 in words is "three million, seven hundred twenty-one thousand, five hundred eighty".