1628057 has 2 divisors, whose sum is σ = 1628058. Its totient is φ = 1628056.

The previous prime is 1628051. The next prime is 1628059. The reversal of 1628057 is 7508261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1290496 + 337561 = 1136^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 1628057 - 2¹⁰ = 1627033 is a prime.

Together with 1628059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1628051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814028 + 814029.

It is an arithmetic number, because the mean of its divisors is an integer number (814029).

2^1628057 is an apocalyptic number.

It is an amenable number.

1628057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628057 is an equidigital number, since it uses as much as digits as its factorization.

1628057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1628057 is about 1275.9533690539. The cubic root of 1628057 is about 117.6404115901.

The spelling of 1628057 in words is "one million, six hundred twenty-eight thousand, fifty-seven".