3769721 has 4 divisors (see below), whose sum is σ = 3776244. Its totient is φ = 3763200.

The previous prime is 3769709. The next prime is 3769751. The reversal of 3769721 is 1279673.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3279721 + 490000 = 1811^2 + 700^2 .

It is a cyclic number.

It is not a de Polignac number, because 3769721 - 2¹⁰ = 3768697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3769751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2300 + ... + 3581.

It is an arithmetic number, because the mean of its divisors is an integer number (944061).

Almost surely, 2^3769721 is an apocalyptic number.

It is an amenable number.

3769721 is a deficient number, since it is larger than the sum of its proper divisors (6523).

3769721 is an equidigital number, since it uses as much as digits as its factorization.

3769721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6522.

The product of its digits is 15876, while the sum is 35.

The square root of 3769721 is about 1941.5769364102. The cubic root of 3769721 is about 155.6334947488.

The spelling of 3769721 in words is "three million, seven hundred sixty-nine thousand, seven hundred twenty-one".