812435968 has 20 divisors (see below), whose sum is σ = 1623286170. Its totient is φ = 406217728.

The previous prime is 812435963. The next prime is 812435971. The reversal of 812435968 is 869534218.

It can be written as a sum of positive squares in only one way, i.e., 448084224 + 364351744 = 21168^2 + 19088^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (812435963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 792883 + ... + 793906.

Almost surely, 2^812435968 is an apocalyptic number.

It is an amenable number.

812435968 is a deficient number, since it is larger than the sum of its proper divisors (810850202).

812435968 is an equidigital number, since it uses as much as digits as its factorization.

812435968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586807 (or 1586791 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 812435968 is about 28503.2624097664. The cubic root of 812435968 is about 933.1032757240.

The spelling of 812435968 in words is "eight hundred twelve million, four hundred thirty-five thousand, nine hundred sixty-eight".