861052747 has 2 divisors, whose sum is σ = 861052748. Its totient is φ = 861052746.

The previous prime is 861052733. The next prime is 861052793. The reversal of 861052747 is 747250168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 861052747 - 2²⁷ = 726835019 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (861052727) 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, 430526373 + 430526374.

It is an arithmetic number, because the mean of its divisors is an integer number (430526374).

Almost surely, 2^861052747 is an apocalyptic number.

861052747 is a deficient number, since it is larger than the sum of its proper divisors (1).

861052747 is an equidigital number, since it uses as much as digits as its factorization.

861052747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 861052747 is about 29343.7002949526. The cubic root of 861052747 is about 951.3564176834.

The spelling of 861052747 in words is "eight hundred sixty-one million, fifty-two thousand, seven hundred forty-seven".