3720986 has 12 divisors (see below), whose sum is σ = 5836362. Its totient is φ = 1779096.

The previous prime is 3720947. The next prime is 3720989. The reversal of 3720986 is 6890273.

3720986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 1485961 = 1495^2 + 1219^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3720989) 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 5 ways as a sum of consecutive naturals, for example, 701 + ... + 2816.

Almost surely, 2^3720986 is an apocalyptic number.

3720986 is a deficient number, since it is larger than the sum of its proper divisors (2115376).

3720986 is a wasteful number, since it uses less digits than its factorization.

3720986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565 (or 3542 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 3720986 is about 1928.9857438561. The cubic root of 3720986 is about 154.9599063833.

The spelling of 3720986 in words is "three million, seven hundred twenty thousand, nine hundred eighty-six".