3720686 has 4 divisors (see below), whose sum is σ = 5581032. Its totient is φ = 1860342.

The previous prime is 3720677. The next prime is 3720697. The reversal of 3720686 is 6860273.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 930170 + ... + 930173.

It is an arithmetic number, because the mean of its divisors is an integer number (1395258).

Almost surely, 2^3720686 is an apocalyptic number.

3720686 is a deficient number, since it is larger than the sum of its proper divisors (1860346).

3720686 is a wasteful number, since it uses less digits than its factorization.

3720686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860345.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 3720686 is about 1928.9079812163. The cubic root of 3720686 is about 154.9557417863.

The spelling of 3720686 in words is "three million, seven hundred twenty thousand, six hundred eighty-six".