861325693 has 2 divisors, whose sum is σ = 861325694. Its totient is φ = 861325692.

The previous prime is 861325679. The next prime is 861325697. The reversal of 861325693 is 396523168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 853691524 + 7634169 = 29218^2 + 2763^2 .

It is a cyclic number.

It is not a de Polignac number, because 861325693 - 2⁹ = 861325181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861325697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430662846 + 430662847.

It is an arithmetic number, because the mean of its divisors is an integer number (430662847).

Almost surely, 2^861325693 is an apocalyptic number.

It is an amenable number.

861325693 is a deficient number, since it is larger than the sum of its proper divisors (1).

861325693 is an equidigital number, since it uses as much as digits as its factorization.

861325693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 43.

The square root of 861325693 is about 29348.3507713807. The cubic root of 861325693 is about 951.4569308816.

The spelling of 861325693 in words is "eight hundred sixty-one million, three hundred twenty-five thousand, six hundred ninety-three".