806770081 has 12 divisors (see below), whose sum is σ = 885571708. Its totient is φ = 730626624.

The previous prime is 806770067. The next prime is 806770093. The reversal of 806770081 is 180077608.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 60606225 + 746163856 = 7785^2 + 27316^2 .

It is not a de Polignac number, because 806770081 - 2¹⁵ = 806737313 is a prime.

It is a super-2 number, since 2×806770081² = 1301755927193493122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 806770081.

It is not an unprimeable number, because it can be changed into a prime (806770021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25471 + ... + 47563.

Almost surely, 2^806770081 is an apocalyptic number.

It is an amenable number.

806770081 is a deficient number, since it is larger than the sum of its proper divisors (78801627).

806770081 is a wasteful number, since it uses less digits than its factorization.

806770081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22212 (or 22159 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 806770081 is about 28403.6983683463. The cubic root of 806770081 is about 930.9290753932.

The spelling of 806770081 in words is "eight hundred six million, seven hundred seventy thousand, eighty-one".