812966617 has 8 divisors (see below), whose sum is σ = 828879624. Its totient is φ = 797182848.

The previous prime is 812966611. The next prime is 812966663. The reversal of 812966617 is 716669218.

812966617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 441672256 + 371294361 = 21016^2 + 19269^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 812966617 - 2⁷ = 812966489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812966611) 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, 19558 + ... + 44815.

It is an arithmetic number, because the mean of its divisors is an integer number (103609953).

Almost surely, 2^812966617 is an apocalyptic number.

It is an amenable number.

812966617 is a deficient number, since it is larger than the sum of its proper divisors (15913007).

812966617 is a wasteful number, since it uses less digits than its factorization.

812966617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64619.

The product of its digits is 217728, while the sum is 46.

The square root of 812966617 is about 28512.5694562942. The cubic root of 812966617 is about 933.3063861126.

The spelling of 812966617 in words is "eight hundred twelve million, nine hundred sixty-six thousand, six hundred seventeen".