3720663 has 12 divisors (see below), whose sum is σ = 5443360. Its totient is φ = 2448576.

The previous prime is 3720649. The next prime is 3720667. The reversal of 3720663 is 3660273.

It is not a de Polignac number, because 3720663 - 2⁸ = 3720407 is a prime.

It is a Duffinian number.

3720663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720667) 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 11 ways as a sum of consecutive naturals, for example, 1906 + ... + 3327.

Almost surely, 2^3720663 is an apocalyptic number.

3720663 is a deficient number, since it is larger than the sum of its proper divisors (1722697).

3720663 is a wasteful number, since it uses less digits than its factorization.

3720663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5318 (or 5315 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 3720663 is about 1928.9020192845. The cubic root of 3720663 is about 154.9554224913.

The spelling of 3720663 in words is "three million, seven hundred twenty thousand, six hundred sixty-three".