699001 has 2 divisors, whose sum is σ = 699002. Its totient is φ = 699000.

The previous prime is 698983. The next prime is 699007. The reversal of 699001 is 100996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608400 + 90601 = 780^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 699001 - 2¹⁵ = 666233 is a prime.

699001 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 699001.

It is not a weakly prime, because it can be changed into another prime (699007) 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, 349500 + 349501.

It is an arithmetic number, because the mean of its divisors is an integer number (349501).

2⁶⁹⁹⁰⁰¹ is an apocalyptic number.

It is an amenable number.

699001 is a deficient number, since it is larger than the sum of its proper divisors (1).

699001 is an equidigital number, since it uses as much as digits as its factorization.

699001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 699001 is about 836.0627966846. The cubic root of 699001 is about 88.7481412029.

Adding to 699001 its reverse (100996), we get a palindrome (799997).

The spelling of 699001 in words is "six hundred ninety-nine thousand, one".