3708221 has 8 divisors (see below), whose sum is σ = 4221504. Its totient is φ = 3224320.

The previous prime is 3708203. The next prime is 3708223. The reversal of 3708221 is 1228073.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3708221 - 2⁶ = 3708157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3708223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7076 + ... + 7581.

It is an arithmetic number, because the mean of its divisors is an integer number (527688).

Almost surely, 2^3708221 is an apocalyptic number.

It is an amenable number.

3708221 is a deficient number, since it is larger than the sum of its proper divisors (513283).

3708221 is a wasteful number, since it uses less digits than its factorization.

3708221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14691.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 3708221 is about 1925.6741676618. The cubic root of 3708221 is about 154.7825045272.

The spelling of 3708221 in words is "three million, seven hundred eight thousand, two hundred twenty-one".