875242661 has 2 divisors, whose sum is σ = 875242662. Its totient is φ = 875242660.

The previous prime is 875242493. The next prime is 875242679. The reversal of 875242661 is 166242578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816244900 + 58997761 = 28570^2 + 7681^2 .

It is a cyclic number.

It is not a de Polignac number, because 875242661 - 2¹⁸ = 874980517 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 (875242261) 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, 437621330 + 437621331.

It is an arithmetic number, because the mean of its divisors is an integer number (437621331).

Almost surely, 2^875242661 is an apocalyptic number.

It is an amenable number.

875242661 is a deficient number, since it is larger than the sum of its proper divisors (1).

875242661 is an equidigital number, since it uses as much as digits as its factorization.

875242661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The square root of 875242661 is about 29584.5003506904. The cubic root of 875242661 is about 956.5540010794.

The spelling of 875242661 in words is "eight hundred seventy-five million, two hundred forty-two thousand, six hundred sixty-one".