861332807 has 2 divisors, whose sum is σ = 861332808. Its totient is φ = 861332806.

The previous prime is 861332789. The next prime is 861332827. The reversal of 861332807 is 708233168.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 861332807 - 2¹² = 861328711 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861332827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430666403 + 430666404.

It is an arithmetic number, because the mean of its divisors is an integer number (430666404).

Almost surely, 2^861332807 is an apocalyptic number.

861332807 is a deficient number, since it is larger than the sum of its proper divisors (1).

861332807 is an equidigital number, since it uses as much as digits as its factorization.

861332807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 861332807 is about 29348.4719704451. The cubic root of 861332807 is about 951.4595503498.

The spelling of 861332807 in words is "eight hundred sixty-one million, three hundred thirty-two thousand, eight hundred seven".