1628701 has 2 divisors, whose sum is σ = 1628702. Its totient is φ = 1628700.

The previous prime is 1628689. The next prime is 1628729. The reversal of 1628701 is 1078261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1623076 + 5625 = 1274^2 + 75^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1628701 is a prime.

1628701 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1628401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 814350 + 814351.

It is an arithmetic number, because the mean of its divisors is an integer number (814351).

2^1628701 is an apocalyptic number.

It is an amenable number.

1628701 is a deficient number, since it is larger than the sum of its proper divisors (1).

1628701 is an equidigital number, since it uses as much as digits as its factorization.

1628701 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 1628701 is about 1276.2057044223. The cubic root of 1628701 is about 117.6559209648.

The spelling of 1628701 in words is "one million, six hundred twenty-eight thousand, seven hundred one".