1471721 has 8 divisors (see below), whose sum is σ = 1603200. Its totient is φ = 1345680.

The previous prime is 1471709. The next prime is 1471751. The reversal of 1471721 is 1271741.

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 1471721 - 2¹⁸ = 1209577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1471751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785 + ... + 1886.

It is an arithmetic number, because the mean of its divisors is an integer number (200400).

2^1471721 is an apocalyptic number.

It is an amenable number.

1471721 is a deficient number, since it is larger than the sum of its proper divisors (131479).

1471721 is a wasteful number, since it uses less digits than its factorization.

1471721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2719.

The product of its digits is 392, while the sum is 23.

The square root of 1471721 is about 1213.1450861294. The cubic root of 1471721 is about 113.7474917935.

The spelling of 1471721 in words is "one million, four hundred seventy-one thousand, seven hundred twenty-one".