3721718 has 48 divisors (see below), whose sum is σ = 7596960. Its totient is φ = 1338480.

The previous prime is 3721717. The next prime is 3721721. The reversal of 3721718 is 8171273.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721717) 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 23 ways as a sum of consecutive naturals, for example, 286280 + ... + 286292.

It is an arithmetic number, because the mean of its divisors is an integer number (158270).

Almost surely, 2^3721718 is an apocalyptic number.

3721718 is an abundant number, since it is smaller than the sum of its proper divisors (3875242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3721718 is a wasteful number, since it uses less digits than its factorization.

3721718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 33 counting only the distinct ones).

The product of its digits is 2352, while the sum is 29.

The square root of 3721718 is about 1929.1754715422. The cubic root of 3721718 is about 154.9700670606.

The spelling of 3721718 in words is "three million, seven hundred twenty-one thousand, seven hundred eighteen".