3720646 has 16 divisors (see below), whose sum is σ = 5789376. Its totient is φ = 1791936.

The previous prime is 3720623. The next prime is 3720649. The reversal of 3720646 is 6460273.

3720646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720649) 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, 9955 + ... + 10321.

It is an arithmetic number, because the mean of its divisors is an integer number (361836).

Almost surely, 2^3720646 is an apocalyptic number.

3720646 is a deficient number, since it is larger than the sum of its proper divisors (2068730).

3720646 is a wasteful number, since it uses less digits than its factorization.

3720646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 3720646 is about 1928.8976126275. The cubic root of 3720646 is about 154.9551864898.

The spelling of 3720646 in words is "three million, seven hundred twenty thousand, six hundred forty-six".