800001613 has 2 divisors, whose sum is σ = 800001614. Its totient is φ = 800001612.

The previous prime is 800001599. The next prime is 800001619. The reversal of 800001613 is 316100008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 448888969 + 351112644 = 21187^2 + 18738^2 .

It is a cyclic number.

It is not a de Polignac number, because 800001613 - 2⁵ = 800001581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800001619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400000806 + 400000807.

It is an arithmetic number, because the mean of its divisors is an integer number (400000807).

Almost surely, 2^800001613 is an apocalyptic number.

It is an amenable number.

800001613 is a deficient number, since it is larger than the sum of its proper divisors (1).

800001613 is an equidigital number, since it uses as much as digits as its factorization.

800001613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 800001613 is about 28284.2997615285. The cubic root of 800001613 is about 928.3183906290.

The spelling of 800001613 in words is "eight hundred million, one thousand, six hundred thirteen".