812407875 has 64 divisors (see below), whose sum is σ = 1396362240. Its totient is φ = 419270400.

The previous prime is 812407873. The next prime is 812407877. The reversal of 812407875 is 578704218.

It is an interprime number because it is at equal distance from previous prime (812407873) and next prime (812407877).

It is not a de Polignac number, because 812407875 - 2¹ = 812407873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (812407873) 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, 1614874 + ... + 1615376.

It is an arithmetic number, because the mean of its divisors is an integer number (21818160).

Almost surely, 2^812407875 is an apocalyptic number.

812407875 is a deficient number, since it is larger than the sum of its proper divisors (583954365).

812407875 is a wasteful number, since it uses less digits than its factorization.

812407875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 812407875 is about 28502.7696022685. The cubic root of 812407875 is about 933.0925204261.

The spelling of 812407875 in words is "eight hundred twelve million, four hundred seven thousand, eight hundred seventy-five".