812680478 has 32 divisors (see below), whose sum is σ = 1348959744. Its totient is φ = 365565312.

The previous prime is 812680471. The next prime is 812680481. The reversal of 812680478 is 874086218.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62801 + ... + 74627.

It is an arithmetic number, because the mean of its divisors is an integer number (42154992).

Almost surely, 2^812680478 is an apocalyptic number.

812680478 is a deficient number, since it is larger than the sum of its proper divisors (536279266).

812680478 is a wasteful number, since it uses less digits than its factorization.

812680478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11936.

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 812680478 is about 28507.5512452403. The cubic root of 812680478 is about 933.1968749763.

The spelling of 812680478 in words is "eight hundred twelve million, six hundred eighty thousand, four hundred seventy-eight".