812506441 has 6 divisors (see below), whose sum is σ = 849369290. Its totient is φ = 777179568.

The previous prime is 812506439. The next prime is 812506451. The reversal of 812506441 is 144605218.

It can be written as a sum of positive squares in only one way, i.e., 727866441 + 84640000 = 26979^2 + 9200^2 .

It is not a de Polignac number, because 812506441 - 2¹ = 812506439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812506411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 767436 + ... + 768493.

Almost surely, 2^812506441 is an apocalyptic number.

It is an amenable number.

812506441 is a deficient number, since it is larger than the sum of its proper divisors (36862849).

812506441 is a wasteful number, since it uses less digits than its factorization.

812506441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535975 (or 1535952 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 812506441 is about 28504.4986098686. The cubic root of 812506441 is about 933.1302549521.

The spelling of 812506441 in words is "eight hundred twelve million, five hundred six thousand, four hundred forty-one".