1646479 has 2 divisors, whose sum is σ = 1646480. Its totient is φ = 1646478.

The previous prime is 1646473. The next prime is 1646497. The reversal of 1646479 is 9746461.

Together with next prime (1646497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1646479 - 2⁹ = 1645967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1646473) 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 as a sum of consecutive naturals, namely, 823239 + 823240.

It is an arithmetic number, because the mean of its divisors is an integer number (823240).

2^1646479 is an apocalyptic number.

1646479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1646479 is an equidigital number, since it uses as much as digits as its factorization.

1646479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 1646479 is about 1283.1519785279. The cubic root of 1646479 is about 118.0824617509.

The spelling of 1646479 in words is "one million, six hundred forty-six thousand, four hundred seventy-nine".