812746285 has 64 divisors (see below), whose sum is σ = 1174860288. Its totient is φ = 533643264.

The previous prime is 812746273. The next prime is 812746289. The reversal of 812746285 is 582647218.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 812746285 - 2²³ = 804357677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812746289) 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 63 ways as a sum of consecutive naturals, for example, 2871754 + ... + 2872036.

It is an arithmetic number, because the mean of its divisors is an integer number (18357192).

Almost surely, 2^812746285 is an apocalyptic number.

812746285 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

812746285 is a deficient number, since it is larger than the sum of its proper divisors (362114003).

812746285 is a wasteful number, since it uses less digits than its factorization.

812746285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454.

The product of its digits is 215040, while the sum is 43.

The square root of 812746285 is about 28508.7054248347. The cubic root of 812746285 is about 933.2220629114. Note that the first 3 decimals are identical.

The spelling of 812746285 in words is "eight hundred twelve million, seven hundred forty-six thousand, two hundred eighty-five".