812503385 has 8 divisors (see below), whose sum is σ = 975218496. Its totient is φ = 649859760.

The previous prime is 812503381. The next prime is 812503427. The reversal of 812503385 is 583305218.

812503385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 812503385 - 2² = 812503381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812503381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11540 + ... + 41930.

It is an arithmetic number, because the mean of its divisors is an integer number (121902312).

Almost surely, 2^812503385 is an apocalyptic number.

It is an amenable number.

812503385 is a deficient number, since it is larger than the sum of its proper divisors (162715111).

812503385 is a wasteful number, since it uses less digits than its factorization.

812503385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35743.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 812503385 is about 28504.4450042445. The cubic root of 812503385 is about 933.1290850538.

The spelling of 812503385 in words is "eight hundred twelve million, five hundred three thousand, three hundred eighty-five".