1628071 has 2 divisors, whose sum is σ = 1628072. Its totient is φ = 1628070.

The previous prime is 1628063. The next prime is 1628093. The reversal of 1628071 is 1708261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1628071 - 2³ = 1628063 is a prime.

1628071 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1628051) 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, 814035 + 814036.

It is an arithmetic number, because the mean of its divisors is an integer number (814036).

2^1628071 is an apocalyptic number.

1628071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628071 is an equidigital number, since it uses as much as digits as its factorization.

1628071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1628071 is about 1275.9588551360. The cubic root of 1628071 is about 117.6407487939.

The spelling of 1628071 in words is "one million, six hundred twenty-eight thousand, seventy-one".