826064813 has 4 divisors (see below), whose sum is σ = 944074080. Its totient is φ = 708055548.

The previous prime is 826064779. The next prime is 826064821. The reversal of 826064813 is 318460628.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 826064813 - 2²² = 821870509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826034813) 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 3 ways as a sum of consecutive naturals, for example, 59004623 + ... + 59004636.

It is an arithmetic number, because the mean of its divisors is an integer number (236018520).

Almost surely, 2^826064813 is an apocalyptic number.

It is an amenable number.

826064813 is a deficient number, since it is larger than the sum of its proper divisors (118009267).

826064813 is a wasteful number, since it uses less digits than its factorization.

826064813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118009266.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 826064813 is about 28741.3432706267. The cubic root of 826064813 is about 938.2920597076.

The spelling of 826064813 in words is "eight hundred twenty-six million, sixty-four thousand, eight hundred thirteen".