1626673 has 2 divisors, whose sum is σ = 1626674. Its totient is φ = 1626672.

The previous prime is 1626649. The next prime is 1626701. The reversal of 1626673 is 3766261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1557504 + 69169 = 1248^2 + 263^2 .

It is an emirp because it is prime and its reverse (3766261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1626673 - 2¹³ = 1618481 is a prime.

1626673 is a lucky number.

It is a nialpdrome in base 12.

It is not a weakly prime, because it can be changed into another prime (1626613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813336 + 813337.

It is an arithmetic number, because the mean of its divisors is an integer number (813337).

2^1626673 is an apocalyptic number.

It is an amenable number.

1626673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1626673 is an equidigital number, since it uses as much as digits as its factorization.

1626673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 1626673 is about 1275.4109141763. The cubic root of 1626673 is about 117.6070670395.

The spelling of 1626673 in words is "one million, six hundred twenty-six thousand, six hundred seventy-three".