812538606 has 16 divisors (see below), whose sum is σ = 1772811648. Its totient is φ = 246223800.

The previous prime is 812538599. The next prime is 812538607. The reversal of 812538606 is 606835218.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812538607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6155530 + ... + 6155661.

It is an arithmetic number, because the mean of its divisors is an integer number (110800728).

Almost surely, 2^812538606 is an apocalyptic number.

812538606 is an abundant number, since it is smaller than the sum of its proper divisors (960273042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812538606 is a wasteful number, since it uses less digits than its factorization.

812538606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12311207.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 812538606 is about 28505.0628134723. The cubic root of 812538606 is about 933.1425681831.

The spelling of 812538606 in words is "eight hundred twelve million, five hundred thirty-eight thousand, six hundred six".