826064247 has 8 divisors (see below), whose sum is σ = 1102550256. Its totient is φ = 550143872.

The previous prime is 826064243. The next prime is 826064249. The reversal of 826064247 is 742460628.

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

It is a cyclic number.

It is not a de Polignac number, because 826064247 - 2² = 826064243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826064243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137988 + ... + 143849.

It is an arithmetic number, because the mean of its divisors is an integer number (137818782).

Almost surely, 2^826064247 is an apocalyptic number.

826064247 is a deficient number, since it is larger than the sum of its proper divisors (276486009).

826064247 is a wasteful number, since it uses less digits than its factorization.

826064247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282817.

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 826064247 is about 28741.3334241820. Note that the first 3 decimals coincide. The cubic root of 826064247 is about 938.2918454090.

The spelling of 826064247 in words is "eight hundred twenty-six million, sixty-four thousand, two hundred forty-seven".