826228687 has 2 divisors, whose sum is σ = 826228688. Its totient is φ = 826228686.

The previous prime is 826228643. The next prime is 826228693. The reversal of 826228687 is 786822628.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-826228687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 826228687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (826228787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413114343 + 413114344.

It is an arithmetic number, because the mean of its divisors is an integer number (413114344).

Almost surely, 2^826228687 is an apocalyptic number.

826228687 is a deficient number, since it is larger than the sum of its proper divisors (1).

826228687 is an equidigital number, since it uses as much as digits as its factorization.

826228687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1032192, while the sum is 49.

The square root of 826228687 is about 28744.1939702612. The cubic root of 826228687 is about 938.3541014522.

The spelling of 826228687 in words is "eight hundred twenty-six million, two hundred twenty-eight thousand, six hundred eighty-seven".