1466721 has 8 divisors (see below), whose sum is σ = 2172960. Its totient is φ = 977796.

The previous prime is 1466719. The next prime is 1466741. The reversal of 1466721 is 1276641.

It is not a de Polignac number, because 1466721 - 2¹ = 1466719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 54323 = 1466721 / (1 + 4 + 6 + 6 + 7 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (1466701) 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, 27135 + ... + 27188.

It is an arithmetic number, because the mean of its divisors is an integer number (271620).

2^1466721 is an apocalyptic number.

It is an amenable number.

1466721 is a deficient number, since it is larger than the sum of its proper divisors (706239).

1466721 is an equidigital number, since it uses as much as digits as its factorization.

1466721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54332 (or 54326 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1466721 is about 1211.0825735680. The cubic root of 1466721 is about 113.6185310393.

It can be divided in two parts, 1466 and 721, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1466721 in words is "one million, four hundred sixty-six thousand, seven hundred twenty-one".