812617241 has 4 divisors (see below), whose sum is σ = 812681232. Its totient is φ = 812553252.

The previous prime is 812617231. The next prime is 812617249. The reversal of 812617241 is 142716218.

It is a happy number.

812617241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-812617241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 812617198 and 812617207.

It is not an unprimeable number, because it can be changed into a prime (812617249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5795 + ... + 40728.

It is an arithmetic number, because the mean of its divisors is an integer number (203170308).

Almost surely, 2^812617241 is an apocalyptic number.

It is an amenable number.

812617241 is a deficient number, since it is larger than the sum of its proper divisors (63991).

812617241 is a wasteful number, since it uses less digits than its factorization.

812617241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63990.

The product of its digits is 5376, while the sum is 32.

The square root of 812617241 is about 28506.4420964806. The cubic root of 812617241 is about 933.1726694396.

The spelling of 812617241 in words is "eight hundred twelve million, six hundred seventeen thousand, two hundred forty-one".