812422673 has 18 divisors (see below), whose sum is σ = 892859922. Its totient is φ = 736649280.

The previous prime is 812422669. The next prime is 812422717. The reversal of 812422673 is 376224218.

It can be written as a sum of positive squares in only one way, i.e., 764633104 + 47789569 = 27652^2 + 6913^2 .

It is not a de Polignac number, because 812422673 - 2² = 812422669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (812422603) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3643040 + ... + 3643262.

It is an arithmetic number, because the mean of its divisors is an integer number (49603329).

Almost surely, 2^812422673 is an apocalyptic number.

It is an amenable number.

812422673 is a deficient number, since it is larger than the sum of its proper divisors (80437249).

812422673 is an equidigital number, since it uses as much as digits as its factorization.

812422673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 271 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 812422673 is about 28503.0291898949. The cubic root of 812422673 is about 933.0981858149.

The spelling of 812422673 in words is "eight hundred twelve million, four hundred twenty-two thousand, six hundred seventy-three".