812680479 has 16 divisors (see below), whose sum is σ = 1296584800. Its totient is φ = 500110848.

The previous prime is 812680471. The next prime is 812680481. The reversal of 812680479 is 974086218.

812680479 is a `hidden beast` number, since 81 + 26 + 80 + 479 = 666.

It is not a de Polignac number, because 812680479 - 2³ = 812680471 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 (812680471) 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 15 ways as a sum of consecutive naturals, for example, 1157314 + ... + 1158015.

It is an arithmetic number, because the mean of its divisors is an integer number (81036550).

Almost surely, 2^812680479 is an apocalyptic number.

812680479 is a deficient number, since it is larger than the sum of its proper divisors (483904321).

812680479 is a wasteful number, since it uses less digits than its factorization.

812680479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315351 (or 2315345 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 812680479 is about 28507.5512627795. The cubic root of 812680479 is about 933.1968753591.

The spelling of 812680479 in words is "eight hundred twelve million, six hundred eighty thousand, four hundred seventy-nine".