3471721 has 8 divisors (see below), whose sum is σ = 3909888. Its totient is φ = 3054000.

The previous prime is 3471719. The next prime is 3471751. The reversal of 3471721 is 1271743.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3471721 - 2¹ = 3471719 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3471701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4750 + ... + 5431.

It is an arithmetic number, because the mean of its divisors is an integer number (488736).

Almost surely, 2^3471721 is an apocalyptic number.

3471721 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3471721 is a deficient number, since it is larger than the sum of its proper divisors (438167).

3471721 is a wasteful number, since it uses less digits than its factorization.

3471721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10223.

The product of its digits is 1176, while the sum is 25.

The square root of 3471721 is about 1863.2554843606. The cubic root of 3471721 is about 151.4194294689.

The spelling of 3471721 in words is "three million, four hundred seventy-one thousand, seven hundred twenty-one".