826494005 has 4 divisors (see below), whose sum is σ = 991792812. Its totient is φ = 661195200.

The previous prime is 826493999. The next prime is 826494037. The reversal of 826494005 is 500494628.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88774084 + 737719921 = 9422^2 + 27161^2 .

It is a de Polignac number, because none of the positive numbers 2^k-826494005 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 826494005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82649396 + ... + 82649405.

It is an arithmetic number, because the mean of its divisors is an integer number (247948203).

Almost surely, 2^826494005 is an apocalyptic number.

It is an amenable number.

826494005 is a deficient number, since it is larger than the sum of its proper divisors (165298807).

826494005 is a wasteful number, since it uses less digits than its factorization.

826494005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165298806.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 826494005 is about 28748.8087579294. The cubic root of 826494005 is about 938.4545319154.

The spelling of 826494005 in words is "eight hundred twenty-six million, four hundred ninety-four thousand, five".