3721066 has 4 divisors (see below), whose sum is σ = 5581602. Its totient is φ = 1860532.

The previous prime is 3721063. The next prime is 3721087. The reversal of 3721066 is 6601273.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3721041 + 25 = 1929^2 + 5^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3721066.

It is not an unprimeable number, because it can be changed into a prime (3721063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 930265 + ... + 930268.

Almost surely, 2^3721066 is an apocalyptic number.

3721066 is a deficient number, since it is larger than the sum of its proper divisors (1860536).

3721066 is a wasteful number, since it uses less digits than its factorization.

3721066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860535.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 3721066 is about 1929.0064800306. The cubic root of 3721066 is about 154.9610169047.

Subtracting from 3721066 its sum of digits (25), we obtain a square (3721041 = 1929²).

The spelling of 3721066 in words is "three million, seven hundred twenty-one thousand, sixty-six".