3721207 has 16 divisors (see below), whose sum is σ = 4576000. Its totient is φ = 3016440.

The previous prime is 3721199. The next prime is 3721213. The reversal of 3721207 is 7021273.

It is not a de Polignac number, because 3721207 - 2³ = 3721199 is a prime.

It is a Duffinian number.

3721207 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6232 + ... + 6802.

It is an arithmetic number, because the mean of its divisors is an integer number (286000).

Almost surely, 2^3721207 is an apocalyptic number.

3721207 is a deficient number, since it is larger than the sum of its proper divisors (854793).

3721207 is an equidigital number, since it uses as much as digits as its factorization.

3721207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 3721207 is about 1929.0430269955. The cubic root of 3721207 is about 154.9629741599.

The spelling of 3721207 in words is "three million, seven hundred twenty-one thousand, two hundred seven".