806790690 has 48 divisors (see below), whose sum is σ = 2109821688. Its totient is φ = 213896448.

The previous prime is 806790683. The next prime is 806790703. The reversal of 806790690 is 96097608.

It can be written as a sum of positive squares in 4 ways, for example, as 740547369 + 66243321 = 27213^2 + 8139^2 .

It is a super-4 number, since 4×806790690⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10339 + ... + 41478.

Almost surely, 2^806790690 is an apocalyptic number.

806790690 is an abundant number, since it is smaller than the sum of its proper divisors (1303030998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

806790690 is a wasteful number, since it uses less digits than its factorization.

806790690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52003 (or 52000 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 806790690 is about 28404.0611532929. The cubic root of 806790690 is about 930.9370022092.

The spelling of 806790690 in words is "eight hundred six million, seven hundred ninety thousand, six hundred ninety".