806491213 has 8 divisors (see below), whose sum is σ = 882423360. Its totient is φ = 730994880.

The previous prime is 806491199. The next prime is 806491229. The reversal of 806491213 is 312194608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 806491213 - 2¹⁷ = 806360141 is a prime.

It is a super-2 number, since 2×806491213² = 1300856153292422738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806491243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105073 + ... + 112486.

It is an arithmetic number, because the mean of its divisors is an integer number (110302920).

Almost surely, 2^806491213 is an apocalyptic number.

It is an amenable number.

806491213 is a deficient number, since it is larger than the sum of its proper divisors (75932147).

806491213 is a wasteful number, since it uses less digits than its factorization.

806491213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217907.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 806491213 is about 28398.7889354458. The cubic root of 806491213 is about 930.8218014403.

The spelling of 806491213 in words is "eight hundred six million, four hundred ninety-one thousand, two hundred thirteen".