3474721 has 2 divisors, whose sum is σ = 3474722. Its totient is φ = 3474720.

The previous prime is 3474719. The next prime is 3474763. The reversal of 3474721 is 1274743.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3474496 + 225 = 1864^2 + 15^2 .

It is a cyclic number.

It is not a de Polignac number, because 3474721 - 2¹ = 3474719 is a prime.

Together with 3474719, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 3474721.

It is not a weakly prime, because it can be changed into another prime (3475721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1737360 + 1737361.

It is an arithmetic number, because the mean of its divisors is an integer number (1737361).

Almost surely, 2^3474721 is an apocalyptic number.

It is an amenable number.

3474721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3474721 is an equidigital number, since it uses as much as digits as its factorization.

3474721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 28.

The square root of 3474721 is about 1864.0603531002. The cubic root of 3474721 is about 151.4630320036.

The spelling of 3474721 in words is "three million, four hundred seventy-four thousand, seven hundred twenty-one".