806217613 has 2 divisors, whose sum is σ = 806217614. Its totient is φ = 806217612.

The previous prime is 806217553. The next prime is 806217617. The reversal of 806217613 is 316712608.

806217613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473410564 + 332807049 = 21758^2 + 18243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806217613 is a prime.

It is a super-2 number, since 2×806217613² = 1299973679022835538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806217617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403108806 + 403108807.

It is an arithmetic number, because the mean of its divisors is an integer number (403108807).

Almost surely, 2^806217613 is an apocalyptic number.

It is an amenable number.

806217613 is a deficient number, since it is larger than the sum of its proper divisors (1).

806217613 is an equidigital number, since it uses as much as digits as its factorization.

806217613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 806217613 is about 28393.9714200039. The cubic root of 806217613 is about 930.7165299279.

The spelling of 806217613 in words is "eight hundred six million, two hundred seventeen thousand, six hundred thirteen".