806012649 has 12 divisors (see below), whose sum is σ = 1253797636. Its totient is φ = 496007712.

The previous prime is 806012611. The next prime is 806012651. The reversal of 806012649 is 946210608.

806012649 is a `hidden beast` number, since 8 + 0 + 6 + 0 + 1 + 2 + 649 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 423536400 + 382476249 = 20580^2 + 19557^2 .

It is not a de Polignac number, because 806012649 - 2⁷ = 806012521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (806012149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3444382 + ... + 3444615.

Almost surely, 2^806012649 is an apocalyptic number.

It is an amenable number.

806012649 is a deficient number, since it is larger than the sum of its proper divisors (447784987).

806012649 is a wasteful number, since it uses less digits than its factorization.

806012649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6889016 (or 6889013 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 806012649 is about 28390.3619032939. The cubic root of 806012649 is about 930.6376514928.

The spelling of 806012649 in words is "eight hundred six million, twelve thousand, six hundred forty-nine".