3473721 has 12 divisors (see below), whose sum is σ = 5065060. Its totient is φ = 2293920.

The previous prime is 3473719. The next prime is 3473731. The reversal of 3473721 is 1273743.

It can be written as a sum of positive squares in 2 ways, for example, as 1946025 + 1527696 = 1395^2 + 1236^2 .

It is not a de Polignac number, because 3473721 - 2¹ = 3473719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3473711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 790 + ... + 2751.

Almost surely, 2^3473721 is an apocalyptic number.

It is an amenable number.

3473721 is a deficient number, since it is larger than the sum of its proper divisors (1591339).

3473721 is a wasteful number, since it uses less digits than its factorization.

3473721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656 (or 3653 counting only the distinct ones).

The product of its digits is 3528, while the sum is 27.

The square root of 3473721 is about 1863.7921021402. The cubic root of 3473721 is about 151.4485006149.

The spelling of 3473721 in words is "three million, four hundred seventy-three thousand, seven hundred twenty-one".