873526721 has 2 divisors, whose sum is σ = 873526722. Its totient is φ = 873526720.

The previous prime is 873526697. The next prime is 873526739. The reversal of 873526721 is 127625378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 869070400 + 4456321 = 29480^2 + 2111^2 .

It is a cyclic number.

It is not a de Polignac number, because 873526721 - 2¹⁸ = 873264577 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (873526741) by changing a digit.

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 as a sum of consecutive naturals, namely, 436763360 + 436763361.

It is an arithmetic number, because the mean of its divisors is an integer number (436763361).

Almost surely, 2^873526721 is an apocalyptic number.

It is an amenable number.

873526721 is a deficient number, since it is larger than the sum of its proper divisors (1).

873526721 is an equidigital number, since it uses as much as digits as its factorization.

873526721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 41.

The square root of 873526721 is about 29555.4854637849. The cubic root of 873526721 is about 955.9284743235.

The spelling of 873526721 in words is "eight hundred seventy-three million, five hundred twenty-six thousand, seven hundred twenty-one".